Skip to content

Founder notes · 1 min read

SoldComps Business Report: $26,158 a Month Selling eBay Sold-Price Data by API

An API for the eBay data eBay restricts: $4,337 in July, $25,759 in October, 973 visitors a month.

Soldcomps report cover
← All articles
ODDIG · Business report · SoldComps
Report v1 · Data as of 2026-11-10
SoldCompssold-comps.com ↗ · eBay sold-prices API

SoldComps makes $26,158 a month selling eBay data that eBay won’t give developers

An API that returns real eBay sold prices in one call. Revenue went from $4,337 in July to $25,759 in October with fewer than a thousand visitors a month. On the day we looked, its core search was down.

sold-comps.com
sold-comps.com homepage, captured Nov 11, 2026
Homepage · captured 2026-11-11

Product at a glance

What it isAn API that returns up to 240 completed eBay sales per request: price, shipping, date, condition, seller.
Who it’s forResellers, developers, market researchers and estate-sale businesses.
How it chargesFree for 100 requests; $9, $29 or $79 a month; high-volume plans up to $999.
Business modelUsage-tiered API subscriptions, also sold through API marketplaces.
MRR
$26,158
592 subscriptions
Fact
October ÷ July
5.9×
$4,337 → $25,759
Derived
Revenue per visitor
$27.56
973 visitors in 30 days
Fact
All-time verified revenue
$74,930
since Apr 2026
Fact
Revenue verified via Stripe on TrustMRR · synced 2026-11-10 16:11 UTCResearched 2026-11-11 · Oddig
ODDIG Business Report · SoldComps · v1Data as of 2026-11-10 · Researched 2026-11-11
Quick read shows the scorecard, key findings, what to copy, our predictions and the bear case. Switch to Full report for the monthly chart, the plans, the MRR table and the channels.

Summary

What this business is

SoldComps sells eBay sold-listing data through an API. One request returns up to 240 completed sales with price, shipping, date, condition and seller; the data is fetched live from eBay, because eBay’s own API restricts access to sold listings for new developers. Plans run from free to $79 a month, with high-volume plans up to $999. Revenue went from $4,337 in July to $25,759 in October 2026, and MRR is $26,158 from 592 subscriptions. The site does not name who runs it; TrustMRR lists Canada.

FormData API
TeamNot named
Entry price$9/mo
First salesApr 2026
Subscriptions592
Visitors / 30 days973
ODDIG scorecard1 = weak · 5 = strong · our judgement, no total score
Revenue qualityHow much recurs
4/5
Channel spreadNot one channel
3/5
CopyabilityFor a solo founder
4/5
DefensibilityHard to copy the product
1/5
Evidence strengthHow sure we are
4/5
Share

Why these scores? See the reasons in Key takeaways →

Momentum

Rising fast. Revenue: last three complete months 9.2 times the three before.Derived

Best suited for

Builder (main). Reliable scraping and parsing, fixed fast when the source changes.

Operator (second). Quotas, plans and uptime are the product.

What you need to start. A data source people need that its owner won’t sell, and tolerance for that owner’s risk.Our read

Key findings

01Data the platform won’t selleBay restricts sold-listing access in its own API; SoldComps fetches it live and sells it per request.FactSee the product →
02Bigger customers drove the jumpSince Sep 14, MRR rose 66% while subscriptions rose by 141; MRR per subscription went from $35.01 to $44.19.DerivedSee the MRR table →
03Down on the day we lookedA banner said sold searches were failing and a fix was in progress.FactSee the risks →
Evidence tagsFactfrom a listed public sourceDerivedour arithmetic on factsFounderclaimed by the founder or siteOur readour judgement
01

Product overview

One GET request, up to 240 real eBay sales.

A request with an API key returns up to 240 completed eBay sales with price, shipping, date, condition and seller, across eight eBay sites and up to 90 days of history[2]. The site says data is fetched live and never cached, that parser fixes usually ship within the hour when eBay changes its pages, and that commercial use is allowed on every plan[2]. It has docs, a changelog and a status page, and is listed on Apify and RapidAPI[2].

The problem it names: eBay’s Finding API heavily restricts sold-listing access and is often unavailable to new developers[1]. The site names no company or owner[2]; TrustMRR lists Canada[1].

What the site looks like

sold-comps.com
sold-comps.com homepage on desktop, captured Nov 11, 2026
sold-comps.com homepage on a phone, captured Nov 11, 2026

Captured Nov 11, 2026 · Screenshots: sold-comps.com.

What to look for

  1. 1
    “Real eBay sold prices. One API call.” with a live search box and sample results.Fact
  2. 2
    A yellow banner says sold searches are failing and a fix is in progress. See §09.Fact
  3. 3
    “Free tier · no credit card · instant API key” under the search.Fact
PlanRequests a monthPrice
Basic100$0
Starter2,000$9
Growth10,000$29
Scale50,000$79
High volume100,000–2,000,000$129–$999

From the homepage, read Nov 11, 2026[2]. Each request counts once whatever it returns; failed requests do not count.

Our readResellers price their stock by what sold, not what is listed. SoldComps turns that daily chore into an API call.Our read
02

Revenue analysis

Near zero until June, then up every month.

Oct 2026
$25,759
$21K$14K$7K
AprMayJunJulAugSepOctNov

Hover or tap a bar. Monthly verified revenue from TrustMRR[1], April to November 2026: the API’s whole record. November covers Nov 1–10.

Revenue quality
Revenue ÷ MRR
1.02×
MRR per subscription
$35.01 → $44.19
Share of all-time revenue
100% since Apr 2026
Verified record starts
Apr 2026
Typical monthly swing
118% a month

Our arithmetic on the verified data in this report. Revenue ÷ MRR uses the last 30 days; the share of all-time revenue counts the months in the chart above; the swing is the median change between complete months.

Revenue was under $1,100 a month until June, then $4,337 in July, $12,791 in August, $19,984 in September and $25,759 in October[1]. October was 5.9 times July.Derived

DateMRRActive subscriptionsMRR per subscription
Sep 14, 2026$15,789451$35.01
Nov 10, 2026$26,158592$44.19

September from an archived copy of the TrustMRR page[3]; November from the live page[1]. The last column is our division.

MRR rose 66% while subscriptions rose by 141. Most of the gain came from customers on bigger plans.Derived

Daily revenue

Nov 6, 2026
$2,431
Oct 13Oct 20Oct 27Nov 3

Hover or tap a bar. Verified daily revenue, Oct 13 – Nov 9, 2026 (UTC), from TrustMRR[1]. Blue: Saturdays and Sundays. Nov 10 is left out because the day was not complete at sync.

Share
Weekday average
$970

20 weekdays.Derived

Weekend average
$791

8 weekend days.Derived

Revenue per visitor
$27.56

973 visitors in 30 days, on TrustMRR.Fact

Google impressions
7,616

Last 30 days.Fact

Market

Other sold-price tools exist for resellers. We found no rival with verified revenue on the same basis, so revenue is not compared.

03

Pricing: pay by request

Free to try, cheap to start, expensive at volume.

Four standard plans run from free to $79 a month, and high-volume plans from $129 to $999[2]. Over-quota requests are blocked until the next cycle rather than billed[2]. MRR per subscription is $44.19, above the $29 Growth plan, which points to a meaningful number of Scale and high-volume customers.Derived

Our readBlocking instead of billing overage keeps bills predictable, and nudges heavy users to upgrade.Our read
04

Where customers come from

Developers who search for a way around eBay’s limits.

Mainvisible on the site or measuredswipe →
Search
7,616 impressions

Google Search Console, last 30 days; 973 visitors.[1]

Fact
API marketplaces
Apify, RapidAPI

Listed on both.[2]

Fact
Use-case pages
4

Resellers, developers, market researchers, estate sales.[2]

Fact
Supportingvisible, impact not measurableswipe →
Free tier
100 requests

No credit card; instant API key.[2]

Fact

What we could not read

Revenue through API marketplaces and the owner’s own promotion are not public.

05

Growth strategies

Three moves, each visible from outside.

P1Sell the closed data
What they didBuilt an API for eBay sold listings, which eBay’s own API restricts.[1][2]
What happened$4,337 in July to $25,759 in October.[1]Fact
How you can use itLook for data developers need that the platform won’t give them.
Cost & conditions The platform can block or change access. 7-day test: list three APIs developers complain about and the data each one withholds.
P2Free tier, request pricing
What they didOffered 100 free requests and plans by request volume.[2]
What happenedMRR per subscription $44.19.[1]Derived
How you can use itLet developers test free, then pay as their volume grows.
Cost & conditions Heavy free users cost money. 7-day test: add a free tier with a hard monthly cap to your API.
P3Be where developers shop
What they didListed on Apify and RapidAPI.[2]
What happenedNot measurable from outside.Our read
How you can use itPut your API in the marketplaces developers already browse.
Cost & conditions Marketplaces take a cut. 7-day test: publish your API on one marketplace this week.
06

Timeline

  • Mar 282025
    ProductFounding date on TrustMRR.[1]
  • Apr2026
    Revenue$347, the first month on record.[1]
  • Sep 142026
    RevenueMRR $15,789 from 451 subscriptions.[3]
  • Oct2026
    Revenue$25,759, the best month so far.[1]
  • Nov 102026
    RevenueMRR $26,158 from 592 subscriptions; $74,930 all-time.[1]
  • Nov 112026
    ProductSite banner: sold searches failing, fix in progress.[2]
07

Key takeaways

SoldComps shows how quickly a narrow data API can grow when it unlocks something a big platform keeps closed, and how fragile that business is when the platform changes a page.

Why we scored it this way

ODDIG scorecard1 = weak · 5 = strong · our judgement, no total score
Revenue qualityHow much recurs
4/5
Monthly API subscriptions with usage tiers; revenue tracks MRR closely.Derived
Channel spreadNot one channel
3/5
Search, use-case pages, Apify and RapidAPI listings.Fact
CopyabilityFor a solo founder
4/5
One focused API; the work is keeping the parser alive.Our read
DefensibilityHard to copy the product
1/5
It depends on reading eBay pages; eBay can change them or block access at any time.Our read
Evidence strengthHow sure we are
4/5
The whole revenue history is verified, plus two MRR readings and verified traffic.Our read
Share

Copy

  1. Sell data a big platform keeps closed. Developers pay to skip the gate. P1
  2. Price by requests, with a free tier. 100 free, then $9 to $999. P2
  3. List on API marketplaces. Apify and RapidAPI bring developers who are already shopping. P3
  4. Don’t count failed requests. It keeps trust during outages. P2

Avoid

  1. Building on someone else’s HTML without a plan B. One layout change breaks the product. §09
  2. Ignoring the platform’s terms. Scraping a marketplace carries legal and access risk. §09
  3. Hiding who runs it. Buyers of an API want to know who keeps it alive. §01
08

Our predictions

Three claims with dates. We mark each one right or wrong on its date and keep the result on the page.

#PredictionCheck onStatus
#1
November verified revenue lands between $20,000 and $35,000TrustMRR, $25,759 in October; Nov 1–10: $9,675.
Dec 1, 2026Open
#2
Active subscriptions are between 500 and 900TrustMRR, 451 on Sep 14 and 592 on Nov 10.
Jan 31, 2027Open
#3
MRR is between $20,000 and $45,000TrustMRR MRR, $15,789 on Sep 14 and $26,158 on Nov 10.
Mar 31, 2027Open

Track record: the predictions in our earlier reports are still open; the first checks land Dec 1, 2026. We mark each prediction right or wrong on its date and keep the result on the page.

09

What could prove us wrong

Things that would change our read, and how to check them.

  1. The outage could last. On Nov 11 the site said sold searches were failing. A long outage would hit renewals.Check: the status page and December MRR.
  2. eBay could block it. Access depends on eBay’s pages and tolerance.Check: the status page on the next review.
  3. The bigger-plan reading is our inference. MRR per subscription rose, but the plan mix is not shown.Check: not public.
  4. Marketplace sales may sit elsewhere. Revenue through Apify or RapidAPI may not flow through this Stripe account.Check: not public.

Appendix

FAQ

How much does SoldComps make?

$26,625 in the 30 days to Nov 10, 2026, verified through Stripe on TrustMRR. MRR is $26,158 from 592 subscriptions; all-time revenue is $74,930.

What does SoldComps cost?

Basic is free for 100 requests a month. Starter is $9 for 2,000, Growth $29 for 10,000 and Scale $79 for 50,000. High-volume plans run from $129 for 100,000 to $999 for 2,000,000.

Where does the data come from?

The site says each request fetches sold listings live from eBay and nothing is cached. It says it is not affiliated with the marketplaces it covers.

Who runs SoldComps?

The site does not name an owner or company. TrustMRR lists Canada as the country.

Sources

  1. [1]
    TrustMRR: SoldComps — revenue, MRR, subscriptions, traffic, daily and monthly data. Verified through a Stripe API key. Synced 2026-11-10 16:11 UTC.
  2. [2]
    sold-comps.com — product, plans and limits, data source, status banner. Read 2026-11-11.
  3. [3]
    Wayback Machine capture of the TrustMRR page on Sep 14, 2026 — MRR, subscriptions and all-time revenue on that date. Read 2026-11-11.

Screenshots © SoldComps, used for commentary. Oddig has no business relationship with SoldComps or eBay. Numbers change daily; check the sources for the latest.

The projects worth a look, in your inbox.

New reports like this one, what is for sale, and who is holding up or fading.

Free. Unsubscribe any time.

The discussion

Comments are closed for this article.

Still building?

Get the next useful signal in your inbox.