10 Best Keyword Research Tools under 50 Month in 2026, Compared
The best keyword research tool under 50 month: 10 picks compared on price, limits and data quality. Prices checked on the vendor's page, November 1, 2026.
Shamim Mia, Founder, SerpAstraLast verified November 1, 202616 min readWe compare pricing pages, documentation and public reviews. We never accept payment for rankings.
Key takeaways
- Ahrefs Starter at $29/month is the best value for most buyers: the largest keyword database in this list inside a full suite. Ubersuggest at $12/month (promotional rate) is the cheapest usable research tool, and KeySearch at $24/month is the cheapest all-rounder with tracking and audits.
- Every tool in this list starts under $50 a month on monthly billing — the most expensive entry plans here are Moz Pro, RankIQ and Frase at $49/month.
- The single most important buying factor is the keyword database behind the tool: a cheap tool with thin data will send you after keywords nobody searches for.
- Free plans exist — AnswerThePublic gives 3 searches a day free and Ubersuggest gives 3 a day — but serious research starts around $12–$29/month.
- Every price below was checked on the vendor's own pricing page on November 1, 2026. Ratings are G2, with review counts shown; four tools have no G2 rating page, so no rating is shown for them.
On this page
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|---|---|---|
| Ahrefs | Freelancers and small teams who want the deepest keyword and backlink data for $29 a month | $29/mo | Yes (verified owners) |
| Ubersuggest | Solo site owners and beginners who want keyword ideas, audits and rank tracking in one cheap plan | $12/mo (promo) | Yes (3 searches/day) |
| KeySearch | Bloggers and niche-site owners who want keyword research plus rank tracking and audits for $24 a month | $24/mo | No (7-day trial) |
| Moz Pro | Small in-house teams that want Domain Authority metrics and keyword research in one beginner-friendly suite | $49/mo | No (trial, not Starter) |
| SpyFu | Small teams and freelancers who research keywords by spying on competitors' organic and paid rankings | $39/mo | No |
| LowFruits | Niche-site builders hunting low-competition long-tail keywords a small site can actually rank for | $29.90/mo | Yes (3 free/7 days) |
| RankIQ | Bloggers who want a hand-picked library of low-competition keywords plus a content optimizer for each post | $49/mo | No |
| Frase | Solo writers and small teams who want keyword research, briefs and content scoring in one workspace | $49/mo | No (7-day trial) |
| AnswerThePublic | Content planners who start every brief from the questions people actually type into Google | $20/mo | Yes (3 searches/day) |
| Keywords Everywhere | SEOs who want search volume, CPC and competition data overlaid on the Google results they already browse | $7/mo (annual) | Yes (limited) |
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Request a listingThe best keyword research tools under $50 a month
Ahrefs
Best for: Freelancers and small teams who want the deepest keyword and backlink data for $29 a month
Ahrefs Starter is the cheapest way into professional-grade keyword data. The $29 plan opens Keywords Explorer, which draws on a 110-billion-keyword database, plus Site Explorer and Site Audit — the same research core the $129 Lite plan runs on, with tighter limits. For a freelancer or a small team, that is enough to build a real keyword list, check what competitors rank for, and audit the site the keywords point to.
The limits are real and worth knowing before you pay. Rank tracking updates weekly, not daily, and every report you open spends one of your monthly credits, so heavy research days burn through the allowance fast. If you need daily positions or unlimited reports, the honest upgrade is Lite at $129/month. Buy Starter when the research data matters more than the tracking speed.
What we like
- Keywords Explorer sits on a 110-billion-keyword database, the largest research index in this list
- Starter includes Site Explorer, Keywords Explorer and Site Audit for $29/month
- Tracks positions across 190+ locations on desktop and mobile, with competitor tracking
Watch out for
- Rank Tracker updates weekly on Starter — daily updates need the paid Project Boost add-on
- No free trial, and metered report credits cap how much research you can do each month
Ubersuggest
Best for: Solo site owners and beginners who want keyword ideas, audits and rank tracking in one cheap plan
Ubersuggest is the entry ramp for keyword research. The Individual plan covers the beginner workflow — keyword ideas, search volume and difficulty, a weekly site audit, rank tracking and basic backlink data — for one project, at the lowest price in this list. The free plan gives you 3 searches a day, which is enough to test the data for your niche before you pay anything.
Two honest caveats. First, the $12 price is a promotion on the live pricing page; the standard Individual rate is $29/month, and the page has moved between the two during 2026, so check the live price first. Second, the volume and difficulty numbers are estimates, and reviewers report they drift further from reality than Ahrefs or Semrush. For a new site finding its first topics, that trade is usually worth it.
What we like
- Cheapest usable research tool here: Individual is $12/month on the live pricing page's promotional rate
- 1 project with 150 searches a day, 125 tracked keywords and 20,000 keyword suggestions a month
- A $120 lifetime option for Individual pays for itself in ten months at the promotional rate
Watch out for
- Search volume and difficulty figures are estimates — G2 reviewers report accuracy gaps versus the big suites
- The live pricing page runs promotions, so the $12 rate may not be the price you see next month
KeySearch
Best for: Bloggers and niche-site owners who want keyword research plus rank tracking and audits for $24 a month
KeySearch is the cheapest paid tool in this list that covers the basics properly. Starter gives you 200 keyword searches a day, 80 tracked keywords, a 2,000-page monthly site audit and a backlink checker for $24/month — research, tracking and audits in one subscription. Its difficulty score is the feature niche-site builders actually use: one number that says whether a small site can win the keyword.
What you give up is depth. There is no free plan, only a 7-day trial, and the Foresight feature that suggests keywords from your own site's rankings sits on the $48 Pro plan. The difficulty scores are estimates, not measurements, so cross-check anything you plan a content cluster around. For a blogger running one or two sites, KeySearch is the best value in this list.
What we like
- 200 keyword searches a day, 80 tracked keywords and a 2,000-page monthly site audit on Starter
- Difficulty scoring, SERP analysis, backlink checker and YouTube research in one plan
- The cheapest all-rounder here that covers research, tracking and audits together
Watch out for
- No free plan — only a 7-day trial, and the Starter plan has no Foresight AI keyword suggestions
- Keyword difficulty scores are estimates; heavy users can hit the 200-searches-a-day cap
Moz Pro
Best for: Small in-house teams that want Domain Authority metrics and keyword research in one beginner-friendly suite
Moz Pro is the friendliest suite in this list, and it owns Domain Authority — the 0–100 site-strength score that appears in countless client reports. The $49 Starter plan bundles Keyword Explorer, Link Explorer, site audit and rank tracking for one site, with MozBar Premium and Moz Academy training. For a small in-house team still learning SEO, it is the easiest suite to pick up and the cheapest way to put DA numbers in a client report.
The Starter plan is a narrow doorway: no free trial, one site, 50 tracked keywords, and rank tracking updates weekly. Moz publishes no annual price for Starter, so there is no yearly discount to claim. Buy Moz for the metrics and the learning curve; track hundreds of keywords and Standard at $99/month is the real starting point.
What we like
- Domain Authority, Page Authority and Spam Score — the metrics clients already recognize — built into every plan
- Keyword Explorer, Link Explorer, site audit and rank tracking in one subscription
- Rated the easiest full SEO suite to learn, with Moz Academy training included
Watch out for
- The $49 Starter plan has no free trial and no rank tracking discount — rank tracking starts on Starter but updates weekly
- Moz publishes no annual price for the Starter plan, so there is no yearly discount to claim
SpyFu
Best for: Small teams and freelancers who research keywords by spying on competitors' organic and paid rankings
SpyFu answers a different question from the rest of this list: not what keywords exist, but what keywords your competitors already rank for and buy ads on. Basic gives you 10,000 rows of search results and exports, 5,000 weekly tracked keyword rankings and a decade of historical data for $39/month. Its Kombat view — the keywords two competitors share that you don't — is the fastest gap analysis here, and the reason small teams keep SpyFu alongside a research tool.
The trade-off is depth: SpyFu's keyword data is thinner than Ahrefs or Semrush, upfront reports show volume first while difficulty takes extra clicks, and white-label reports and API access start on Pro + AI. It is a competitor-research tool first and a keyword database second: buy it when the gap analysis is the job, Ahrefs when the database is.
What we like
- 10,000 rows of search results and exports on Basic, plus 5,000 weekly tracked keyword rankings
- Kombat shows the keywords competitors share that you don't — the fastest gap analysis in this list
- 10+ years of historical ranking and ad data included on the entry plan
Watch out for
- Rank tracking is weekly on Basic, and white-label reports and API access start on Pro + AI
- Keyword data is thinner than the big suites — upfront reports show volume first, and difficulty takes extra clicks
LowFruits
Best for: Niche-site builders hunting low-competition long-tail keywords a small site can actually rank for
LowFruits is the contrarian specialist in this list. Instead of building the biggest keyword database, it asks one question: can a small site rank for this keyword today? It pulls the top search results for a keyword and flags the weak ones — forums, low-authority sites, listicles from weak domains — then groups the winnable keywords into clusters by intent. For a niche-site builder, that is the difference between a keyword list and a publishing plan.
The pricing model needs attention: every SERP analysis costs one credit, monthly credits reset and do not roll over, and the rank tracker and competitor tools are subscription-only. Slow publishers do best on the $25 pay-as-you-go pack, which lasts a year. Buy LowFruits when winning easy keywords is the strategy; buy a suite when you need the full workflow.
What we like
- Analyzes live SERPs to flag weak spots — forums, low-authority sites and intent mismatches — instead of guessing from difficulty scores
- Standard includes 3,000 credits a month, 100 tracked keywords and competitor keyword extraction
- Pay-as-you-go packs start at $25 for 2,000 credits, so slow publishers pay almost nothing
Watch out for
- Credit-based pricing: every SERP analysis costs a credit, and monthly credits do not roll over
- Narrower toolset than the suites — no backlink index and no full site audit
RankIQ
Best for: Bloggers who want a hand-picked library of low-competition keywords plus a content optimizer for each post
RankIQ is built for one buyer: the blogger. Its pitch is simple — a hand-picked library of the lowest-competition, highest-traffic keywords for every major blog niche, curated by founder Brandon Gaille, plus a content optimizer that grades your draft against the top posts and tells you what to add. The Blogger plan costs $49/month for 16 SEO reports, and carries the highest G2 rating here at 4.9/5 from 532 reviews.
Two honest caveats: no free trial is advertised, so the product tour video and G2 reviews carry the pre-sale proof. And the homepage now sells RankIQ bundled with Aided, an AI content platform, framing $49 as a discount against a $99 rate without stating the renewal price — confirm the renewal price before you commit. For bloggers publishing a few posts a month, the curated library is the time-saver.
What we like
- A hand-picked keyword library for every major blog niche, filled with the lowest-competition phrases with traffic potential
- The content optimizer grades your draft against the top-ranking posts and tells you what to add
- Highest G2 rating in this list at 4.9/5 from 532 reviews
Watch out for
- No free trial advertised, and the 16-report monthly allowance does not roll over
- The homepage frames $49 as a discounted bundle with Aided and does not state the renewal price
Frase
Best for: Solo writers and small teams who want keyword research, briefs and content scoring in one workspace
Frase has quietly become one of the best value picks for writers. It audits your site page by page, scores each page for Google search and AI answers, surfaces the fixes with the biggest likely payoff, and drafts the improvements for you to approve — research, briefs, scoring and AI-visibility tracking in one workspace from the $49 Starter plan. The 7-day trial needs no credit card and runs on the Professional feature set, so you can test it first.
The ceiling is the article allowance: Starter covers 10 articles and 50 audit pages a month, and AI writing is capped unless you add the $35/month SEO add-on. That makes Frase a research-and-optimization tool first and a writing tool second: buy it when you publish a few careful posts a month, and take Professional at $129/month if you publish daily.
What we like
- Research, briefs, scoring and AI visibility tracking (ChatGPT and Google AI) included from the $49 Starter plan
- Scores each page for Google search and AI answers, then drafts the fixes for you to approve
- 7-day free trial with no credit card, on the Professional feature set
Watch out for
- No free plan — only a 7-day trial — and the Starter plan caps at 10 articles a month
- AI writing is capped on Starter; unlimited AI writing needs a $35/month add-on
AnswerThePublic
Best for: Content planners who start every brief from the questions people actually type into Google
AnswerThePublic does one job well: it turns a seed keyword into the questions, prepositions and comparisons people actually type into search engines, from autocomplete data. That question map is the raw material for briefs, FAQs and content clusters, and the $20 Starter plan adds search volume, CPC data and CSV exports. The free plan gives you 3 searches a day, which is enough to plan a week's worth of topics for a small blog.
The scope is narrow by design: no rank tracking, no site audit and no backlink data, so AnswerThePublic pairs with a research tool rather than replacing one. Pricing changed in 2026: the old $9 Individual plan is gone, and Starter is now $20/month. Buy it when questions are your content strategy; buy KeySearch or Ubersuggest when you need the numbers behind the questions.
What we like
- Turns one seed keyword into the questions, prepositions and comparisons people actually search for
- Search volume and CPC data plus CSV exports from the $20 Starter plan
- Free plan with 3 searches a day is genuinely useful for occasional topic planning
Watch out for
- Narrow scope — questions and phrases only, no rank tracking, audits or backlink data
- The free plan allows only 3 searches a day, and search volume data needs a paid plan
Keywords Everywhere
Best for: SEOs who want search volume, CPC and competition data overlaid on the Google results they already browse
Keywords Everywhere is a browser extension, not a dashboard, and that is the point. It overlays search volume, CPC, competition and a 12-month trend on the Google, YouTube and Amazon pages you already use, so research happens inside your normal browsing. One credit buys the data for one keyword, and Bronze costs $84 a year for 100,000 credits — about $0.84 per 1,000 keywords, the cheapest rate here.
The credit meter is the catch: one Google search with the related, people-also-search-for and long-tail widgets on can cost 54 credits, and Search Console pages charge a credit per keyword shown, so a 500-row report costs 500 credits. There is also no monthly checkout: every plan bills annually, and credits expire after a year. Buy it for volume data everywhere you browse; buy a dashboard tool for a research workflow.
What we like
- Volume, CPC, competition and a 12-month trend for one keyword per credit — about $0.84 per 1,000 keywords on Bronze
- Works inside Google, YouTube, Amazon and Search Console, plus an API and MCP server on every plan
- Cheapest entry point here: $84 a year for 100,000 credits
Watch out for
- Credits drain fast: one Google search with all widgets on can cost 54 credits
- Annual billing only — there is no monthly checkout, so the $84 is a year-long commitment
What the best keyword research tool under 50 month actually does
A keyword research tool answers three questions before you write anything: what do people search for, how many of them search, and how hard is it to rank for? It takes a seed word — "keyword research tool", say — and returns the related searches with monthly volume, a difficulty score, and the pages already ranking for each term. That is the whole job: no guessing from autocomplete, no writing a post and hoping someone searches for it.
People search for this category two ways — keyword research tools and keyword research software — and they mean the same thing. The products differ in what else they bundle around the research: some are pure research tools, some add rank tracking, audits and backlinks, and the price follows the bundle, not just the research.
One number that shows how much of search is still undiscovered: AnswerThePublic notes on its pricing page that 20% of daily Google searches have never been seen before. New questions appear every day, which is why a tool that surfaces fresh long-tail phrases matters more than a tool that only reports the head terms everyone already targets.
The best keyword research tool under 50 month for a first keyword list
If you have never bought a keyword tool, start where the money is zero. AnswerThePublic's free plan gives you 3 searches a day — enough to map the questions around one topic — and Ubersuggest's free plan gives you 3 searches a day too. Keywords Everywhere has a limited free mode that shows some data without credits. Run one real topic through all three before you pay anything: the question map from AnswerThePublic, the volume and difficulty from Ubersuggest, and the in-SERP volume from Keywords Everywhere.
The free tiers are honest products, not demos, but they cap out fast. Three searches a day covers one topic a week, not a content calendar. The moment you research keywords every week, a paid plan is cheaper than the time you lose checking volumes by hand. Ubersuggest Individual at $12/month on its promotional rate is the cheapest paid step, and Keywords Everywhere at $84 a year is the cheapest way to keep volume data on every Google search you make.
The best keyword research tool under 50 month for competitor research
The fastest way to a keyword list that works is to borrow one: find what your competitors rank for, then take the gaps. Ahrefs Starter at $29/month is the cheapest way into the deepest data for that job — Keywords Explorer on a 110-billion-keyword database, plus Site Explorer to pull any competitor's ranking keywords. SpyFu at $39/month is the specialist: its Kombat view shows the keywords two competitors share that you don't, and ten years of ad history shows what they paid to rank for.
Moz Pro at $49/month and KeySearch at $24/month sit between the two. Moz brings Domain Authority into the comparison, so you can judge whether your site can actually win a keyword your competitor holds. KeySearch is the budget route to the same workflow: difficulty scores, SERP analysis and a backlink checker for $24/month, where Ahrefs charges $29 for the data and Moz charges $49 for the metrics. Pick Ahrefs when the database matters most, SpyFu when the gap matters most, and KeySearch when the budget matters most.
The best keyword research tool under 50 month for bloggers and content teams
Bloggers need a different shape of tool: not the biggest database, but the shortest path from keyword to published post. RankIQ is built exactly for that — a hand-picked library of low-competition keywords for each blog niche, plus a content optimizer that grades your draft against the top-ranking posts. Frase covers the same ground for small teams: research, briefs, scoring and AI-visibility tracking in one workspace, with a 7-day trial that needs no credit card.
LowFruits is the third leg of this group and the most contrarian. It does not try to out-database Ahrefs; it analyzes live search results and flags the weak spots — forums, low-authority sites, intent mismatches — so a small site can pick keywords it can win this month. If you publish a few posts a month, one of these three will save you more time than any suite. If you publish daily, Frase's Professional plan or a suite is the honest upgrade.
Quick comparison: tool type by need for the best keyword research tool under 50 month
| Buyer | Best pick | Why |
|---|---|---|
| First keyword list, zero budget | AnswerThePublic or Keywords Everywhere | Free searches daily; volume data from $7/month equivalent |
| Cheapest usable research | Ubersuggest | $12/month promotional rate, full beginner workflow |
| Best value all-rounder | KeySearch | Research, tracking and audits for $24/month |
| Deepest research data | Ahrefs | 110-billion-keyword database from $29/month |
| Competitor gap analysis | SpyFu | Kombat view plus 10 years of history from $39/month |
| Bloggers chasing easy keywords | RankIQ or LowFruits | Curated low-competition library, or live weak-SERP analysis |
| Writers who need briefs and scoring | Frase | Research, briefs and AI visibility from $49/month |
| Question research for content plans | AnswerThePublic | Every question around a seed keyword from $20/month |
How to choose the best keyword research tool under 50 month
- Count how often you research. Once a month, the free plans and Keywords Everywhere cover you. Every week, you need a subscription — Ubersuggest at $12 or KeySearch at $24.
- Check the database before the price. A $12 tool with thin data sends you after keywords nobody searches for. Ahrefs' 110-billion-keyword database is the reason Starter costs $29 and still wins on value.
- Decide suite or specialist. If you need audits and backlinks too, a suite is cheaper than the tools separately. If you only need keywords, a specialist costs less — LowFruits, RankIQ and AnswerThePublic each do one job well.
- Read the limits, not just the price. Searches per day, tracked keywords and reports per month are the real budget. RankIQ's 16 reports a month and KeySearch's 200 searches a day bite sooner than the price suggests.
- Try before you pay. Every tool in this list has a free plan or a free trial except RankIQ. Run your real seed keywords for a week and compare the volumes against Google Keyword Planner before committing.
Before you publish pages for the keywords you pick, run your titles through the free keyword density checker and get an SEO audit to see which of your existing pages the new keywords should target.
Mistakes to avoid with the best keyword research tool under 50 month
- Comparing monthly prices without checking billing. The annual price is usually 15–20% lower, and two tools here have no monthly option at all — Keywords Everywhere bills annually only, and Ahrefs Starter has no annual option.
- Trusting search volume as a promise. Volume is an estimate from a sample, and every vendor's sample differs. Cross-check a keyword in two tools before building a content cluster around it, and read our guide to keyword difficulty software to see how the scores are built.
- Paying for a suite when you only need keywords. A $49 specialist you use weekly beats a $129 suite you open for one report.
- Ignoring what counts as a search. Keywords Everywhere charges a credit per keyword shown, LowFruits charges a credit per SERP analyzed, and RankIQ charges a report per post. A busy research day can cost far more than the sticker price suggests.
- Trusting a directory price. G2 still shows SpyFu Basic at $59, but the live pricing page says $39. Always check the vendor's own page.
How we chose the best keyword research tool under 50 month
We checked each vendor's own pricing page on November 1, 2026 and recorded the starting price exactly as shown, including the annual-billing figure where the page lists one. Three prices needed a note: Ubersuggest's page renders its prices dynamically, so the $12 Individual figure is the promotional rate read off the live page in October 2026, with the standard rate at $29; AnswerThePublic's and LowFruits' pages also render prices dynamically, so their figures rest on multiple independent October 2026 checks of those pages. Moz publishes no annual price for its Starter plan, and RankIQ's homepage frames $49 as a discounted bundle without stating the renewal price. Ratings come from G2, checked November 1, 2026; KeySearch, LowFruits, Frase and AnswerThePublic have no G2 rating page, so no rating is shown for them. Two tools we considered were left out: Long Tail Pro, whose longtailpro.com domain now serves an unrelated business, and Jaaxy, whose standalone pricing conflicts across sources after its rebuild inside Wealthy Affiliate. We ranked the tools by fit for the most common buyer — a freelancer or small-site owner doing keyword research on a budget — not by brand size. No vendor paid for a place in this list, and none of the links here are affiliate links.
What to do next with the best keyword research tool under 50 month
Start with the decision path above: count how often you research, check the database, and decide suite or specialist. Then take the free plan or trial of your top pick and run your real seed keywords for a week. If the volumes match what you see in Search Console and the difficulty scores feel honest, you have your tool. If you'd rather have this set up and read for you, request a free SEO + AI visibility audit and get a ranked fix list in 2 business days.
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Get a free SEO + AI visibility audit→Sources we checked (16)
- Ahrefs pricing — ahrefs.com/pricing (checked November 1, 2026)
- Ahrefs on G2 — 4.5/5, 723 reviews (checked November 1, 2026)
- Ubersuggest pricing — app.neilpatel.com/en/pricing (checked November 1, 2026)
- Ubersuggest on G2 — 4.2/5, 160 reviews (checked November 1, 2026)
- KeySearch pricing — keysearch.co (checked November 1, 2026)
- Moz Pro pricing — moz.com/products/pro/pricing (checked November 1, 2026)
- Moz Pro on G2 — 4.3/5, 608 reviews (checked November 1, 2026)
- SpyFu pricing — spyfu.com/pricing (checked November 1, 2026)
- SpyFu on G2 — 4.6/5, 519 reviews (checked November 1, 2026)
- LowFruits pricing — lowfruits.io/pricing (checked November 1, 2026)
- RankIQ pricing — rankiq.com (checked November 1, 2026)
- RankIQ on G2 — 4.9/5, 532 reviews (checked November 1, 2026)
- Frase pricing — frase.io (checked November 1, 2026)
- AnswerThePublic pricing — answerthepublic.com/pricing (checked November 1, 2026)
- Keywords Everywhere pricing — keywordseverywhere.com (checked November 1, 2026)
- Keywords Everywhere on G2 — 5.0/5, 8 reviews (checked November 1, 2026)
Shamim
Founder of SerpAstra
A full-stack SEO and digital marketer who spends most days on Local SEO for dental practices, AI search visibility and lead generation.
Frequently asked questions
What is the best keyword research tool under $50 a month?
Ahrefs Starter at $29/month is the best value for most buyers: Keywords Explorer on a 110-billion-keyword database, plus Site Explorer and Site Audit. If $29 is still too much, Ubersuggest Individual at $12/month (promotional rate) covers the beginner workflow, and KeySearch at $24/month is the cheapest all-rounder with tracking and audits.
Can I do keyword research for free?
Yes, with limits. AnswerThePublic gives 3 searches a day free, Ubersuggest gives 3 a day, and Ahrefs Free covers verified site owners with basic data. Free plans work for occasional topic ideas. Once you research keywords every week, a paid plan is cheaper than the time you lose to manual checks and thin data.
Is Ubersuggest really $12 a month?
That is the promotional rate on Ubersuggest's live pricing page, read in October 2026. The standard Individual rate is $29/month, and the page has moved between the two during 2026. There is also a $120 lifetime option for Individual. Either way it stays under $50, but check the live page before you budget.
What is the cheapest keyword research tool?
Keywords Everywhere, at $84 a year for 100,000 credits — a $7-a-month equivalent, but annual billing only with no monthly checkout. The cheapest monthly subscription is Ubersuggest Individual at $12/month on its promotional rate, or $29/month at its standard rate. Both are cheaper than any full suite.
Do I need Ahrefs, or will a budget tool do?
It depends on how much research you do. If you build keyword lists every week, check competitors and report to clients, Ahrefs' database is worth $29/month. If you publish a few posts a month for one site, KeySearch at $24 or Ubersuggest at $12 gives you the same workflow with thinner data. Start cheap and upgrade when the limits bite.
What should I check before paying for a keyword research tool?
Four things: how big the keyword database is and where the numbers come from, what the plan limits — searches per day, tracked keywords, reports per month — actually allow, whether the price is monthly or annual billing, and whether a free plan or trial exists. All four vary widely, and the comparison table at the top shows the starting price and free plan for each tool.
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