← Idea market
Shopping480 searches / mo

Secondhand price checking

What's this actually worth on resale.

Opportunity score

4,232 / 10k

Niche, but buildable. Small audience, low noise.

Rank

#121

Gap

A

  • Demand

    0

    480 searches a month on "ebay price checker".

  • Momentum

    56

    Last three months ran up 7.2% against the three before, seasonality smoothed out.

  • Competition gap

    81

    12 real products rank on page one for this, ad competition 0.04.

  • Crowd

    41

    8 head-to-head rankings from builders, counted at partial weight until 20.

  • Willingness to pay

    58

    Advertisers pay $3.03 a click for this search — some money moves here.

What this score is based on

evidence checked 9/28/2026

  • Search demand verified against Google Ads data
  • 12 months of search history
  • Keyword cluster not built yet
  • 8 firsthand pain signals from forum threads
  • 12 competitors analyzed from page-one results
  • 8 crowd rankings from builders

Search demand comes from Google Ads data via DataForSEO and refreshes daily. Competitors come from a live scan of page-one results. Crowd input comes from builders ranking ideas 1-2-3 on the market.

Who has the problem

Manually researching sold prices across multiple online marketplaces is a laborious, multi-step process that consumes significant time for individual item valuation. Existing platform tools, like eBay's Price Guide 'Beta', are often inaccurate, leading to mispricing items or missing out on fair value.

"I know I can do this manually but it's pretty time consuming."from a thread we pulled below
Who experiences it
A seller or buyer considering an instant offer for a secondhand item, or someone evaluating items for sourcing to resell.
When it happens
They need to determine a fair market price for a specific secondhand item before listing it or making a purchase decision.
How often
This occurs whenever they acquire or consider acquiring an item for resale, or when listing items on platforms like eBay, Depop, or Poshmark.
What they do today
They manually search across multiple platforms (eBay, Depop, Poshmark), filtering by 'sold' listings, often after a reverse image search, to compare actual sales data, which is time-consuming and often inaccurate with beta tools.

Read off 0 search phrases and 8 forum threads listed below, 9/27/2026.

Why now

Demand is climbing and the field hasn't consolidated.

  • Demand is steady year over year

    537 a month twelve months ago → 537 now for "ebay price checker".

  • Rising 7% over the last quarter

    Last three months of searches against the three before them.

  • Peaks in October

    Demand swings 50% across the year, so ship roughly two months before October.

  • Advertisers pay $3.03 a click here

    Buying this intent instead of ranking for it would run roughly $436 a month — money is already chasing these searches.

  • 5 real products on page one

    Alongside 7 articles and reference pages, which is room a focused tool can take.

Search data

verified · dataforseo:us · refreshed 9/28/2026

Lead keyword
ebay price checker
Cluster volume
480 / mo
total searches across the matched keyword cluster
CPC
$3.03
what an advertiser pays for one click here
Ad competition
0.04
0-1 scale: barely any advertisers bidding

Opportunity score 4,232 = 40% contestable search demand (480 a month across 0 keywords, after removing 480 brand searches) + 25% how open the competition still is (12 products on page one) + 15% momentum (last three months vs the three before, capped so one bucketed month can't swing it) + 10% willingness to pay ($3.03 a click) + 10% crowd rankings (Elo 1472, 8 head-to-heads, weighted by how many votes exist). Anything we can't measure is dropped and the rest re-weighted, so a blank signal never counts as an average one. Search data refreshes daily from Google Ads via DataForSEO.

Monthly searches for "ebay price checker"

8 votes · demand from dataforseo:us, updated 9/28/2026

537
Sep 25
436
Oct 25
537
Nov 25
436
Dec 25
537
Jan 26
358
Feb 26
537
Mar 26
436
Apr 26
436
May 26
436
Jun 26
537
Jul 26
537
Aug 26

Peak 537 · latest 537 · low 358 searches a month

Google reports monthly volume in fixed buckets (…27,100 · 33,100 · 40,500 · 49,500), so steady months land on the exact same number. Weekly data isn't published.

Revenue potential

estimate, not a promise

Priced and converted as a freemium consumer app — the funnel below changes with that model, because a freemium consumer app and a B2B tool convert nothing alike.

MRR by month 12

$2 – $13

0–1 paying users · +0–0 new a month at 7% churn

Year-one run rate

$25 – $152

the month-12 number annualised — you earn less than this during the ramp

Price

$14/mo

same price as the business model below

24-month projection

log scale

Month 24 · hover to scrub

Slow build $2Good execution $16Breakout $236

The two solid lines are the range above: a slow build and good execution on a slice of this demand. The dashed line is the breakout — you become the default answer for this problem, take roughly a quarter of the intent, convert far better because people arrive already sold, and churn halves. That's the outcome worth chasing, and it's about $236 a month by month 24 (33 paying users). Most ideas land on the bottom line; the point of the chart is that the ceiling isn't the estimate.

How we got there

  • 480 cluster searches a month, 1.6x for app stores and word of mouth.
  • You reach 1.0-5.9% of that, scaled by ad competition 0.04.
  • 12% of visitors sign up, 2% of those pay. Freemium consumer: roughly 1-3% of free users ever pay, so this needs volume.
  • That wins 0-0 new subscribers a month. Stack 12 months of that against 7% monthly churn and you're holding 0-1 paying users by month 12.
  • Price $14/mo, taken from the business model below.

Who already builds this

5 real products · 7 articles, explainers and store pages · 12 read in depth · scanned daily on Google for "ebay price checker"

5 real products own this search. Everything else on page one is a roundup, review post or explainer, listed separately below.

  • #5Itemvaluechecker

    Ranks #5 on Google for "ebay price checker".

    Pricing Free; Pro $7/mo

    Strengths Free photo-based estimates with no signup required, leveraging active eBay asking prices. Offers bulk uploads and higher AI listing limits for Pro users.

    Weaknesses Estimates are directional and based on asking prices, not actual sold prices, requiring manual verification for important decisions. Relies heavily on eBay data, so accuracy for other marketplaces is not guaranteed.

    ~209,750 organic visits a month (estimate)

    itemvaluechecker.com · from live Google results · verified Aug 18

    source page
  • #6Vendoo

    Ranks #6 on Google for "ebay price checker".

    Pricing FREE plan $0 (5 items); Starter plan $8.99/m (25 items); Simple plan $19.99/m (125 items); Plus plan $29.99/m (250 items); Pro plan $49.99/m (600 items); Advance plan $99.99/m (2000 items); Expert plan $149.99/m (4000 items); Enterprise Contact us

    Strengths Provides eBay price history and average prices to help optimize listings and drive sales. Features crosslisting, bulk actions, inventory management, and analytics across multiple marketplaces.

    Weaknesses The eBay Price Checker Tool is specifically for eBay and requires an eBay account with Seller Hub enabled to use its core features.

    ~95,033 organic visits a month (estimate)

    vendoo.co · from live Google results · verified Aug 18

    source page
  • #8Watchcount

    Ranks #8 on Google for "ebay price checker".

    Pricing All searches and tools are available with a free account. Higher usage limits may require a paid plan. Beta launch discounts are available for a limited time.

    Strengths Helps buyers and sellers with eBay research through sold item prices, most popular live listings, and advanced search filters. Includes features like best-selling search, CSV exports, saved searches, email alerts, and seller search.

    Weaknesses Specific pricing for paid plans and usage limits are not detailed on the available pages. The dedicated pricing page is listed as 'Page Not Found'.

    ~39,655 organic visits a month (estimate)

    watchcount.com · from live Google results · verified Aug 18

    source page
  • #17Closo

    Ranks #17 on Google for "ebay price checker".

    Pricing Start free; Closo Crosslister 100% free

    Strengths The Closo Crosslister is 100% free, syncs inventory across multiple marketplaces, and is highlighted as saving about three hours a week of manual search.

    Weaknesses The provided text does not detail specific paid tiers or advanced features for the Closo Price Tracker, focusing instead on the general utility of such tools and the free crosslister.

    ~441,085 organic visits a month (estimate)

    closo.co · from live Google results · verified Aug 18

    source page
  • #20Zikanalytics

    Ranks #20 on Google for "ebay price checker".

    Pricing PRO $14 /month (billed annually); PRO+ $20 /month (billed annually). Monthly options at $39.9 and $59.9. $1 Trial available.

    Strengths Offers extensive tools for product research, competitor analysis, and sourcing across eBay and Shopify, with AI automation and a Chrome extension. Includes a wide range of free tools.

    Weaknesses Monthly pricing is significantly higher than the annual equivalent, with monthly PRO+ being nearly three times the annual PRO price per month. The pricing structure is a bit confusing with first-month discounts and different displayed monthly prices for annual vs. monthly payment terms.

    ~30,228 organic visits a month (estimate)

    zikanalytics.com · from live Google results · verified Aug 18

    source page
Also ranking, but not products (7)

Roundups, review posts, explainers and store pages. They compete for the search, not for the job — they don't count against the competition gap.

Likely business model

willingness to pay 27/100

Freemium consumer app

Broad consumer intent: get them using it free, charge for volume and polish.

How rivals make money 12 competitors read: 10 on subscriptions, 0 one-time, 0 free. Plans seen: Free; Pro $7/mo · FREE plan $0 (5 items); Starter plan $8.99/m (25 items); Simple plan $19.99/m (125 items); Plus plan $29.99/m (250 items); Pro plan $49.99/m (600 items); Advance plan $99.99/m (2000 items); Expert plan $149.99/m (4000 items); Enterprise Contact us · All searches and tools are available with a free account. Higher usage limits may require a paid plan. Beta launch discounts are available for a limited time.

Price to test · from real competitor pricing

$9–$19/mo

Median of 6 competitor pricing pages we could read ($14/mo), widened either side.

What to charge for

Free core, paid depth. Gate history, exports and power features rather than the first-run experience — the exact free limit is something you tune after launch, not something this data can tell you.

Willingness-to-pay evidence

  • 12 competitors read: 10 on subscriptions, 0 one-time, 0 free. Plans seen: Free; Pro $7/mo · FREE plan $0 (5 items); Starter plan $8.99/m (25 items); Simple plan $19.99/m (125 items); Plus plan $29.99/m (250 items); Pro plan $49.99/m (600 items); Advance plan $99.99/m (2000 items); Expert plan $149.99/m (4000 items); Enterprise Contact us · All searches and tools are available with a free account. Higher usage limits may require a paid plan. Beta launch discounts are available for a limited time.
  • Advertisers pay $3.03 a click for this intent — real money already chases it.
  • Competitors charge a median of $14/mo, from 6 pricing pages read.
  • Ad competition 0.04 — few advertisers fighting for it.

Firsthand pain signals

8 discussions · source links, check them yourself

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