
Underpriced.App
Terapeak
SoldFetch
ZIK Analytics
Flipshope
ScoutFlip
PriceHunt
One API call, up to 240 real eBay sold prices. Real-time transaction data for resellers, flippers, and developers. Try the live demo free.

YieldStack
CBRE Group
Jones Lang LaSalle
Online platform for commercial real estate loans

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | sold-comps.com | stacksource.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Canada · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


SoldComps is an eBay sold-listings API for resellers, flippers, and developers who need real completed-sale data for pricing. A single keyword search returns up to 240 sold listings straight from eBay's completed-sales results — the sold price recorded on each listing, plus shipping, currency,...
No description of StackSource yet.
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As answered by people managing SoldComps and StackSource.
SoldComps's answer
SoldComps returns real eBay sold listings — completed sales, not active listings or estimates — from a single API call.
One keyword search returns up to 240 sold items, each as clean JSON with:
Most tools lock this data behind a dashboard or require an approved eBay developer account. SoldComps hands it back as a simple authenticated GET request you can integrate in minutes — across 8 eBay marketplaces.
SoldComps's answer
It's built API-first for people who want the data, not another dashboard to log into.
No eBay developer account, OAuth flow, or approval process — just an API key and a GET request that returns clean JSON. What you get:
Pricing is per search, not per result — a search that returns 10 items or 240 counts as one request — and there's a free tier with no credit card to start.
SoldComps's answer
SoldComps serves four main audiences:
SoldComps's answer
SoldComps started from a simple, recurring frustration: eBay is the best source of real sold-price data, but actually getting that data is painful.
eBay's own API heavily restricts access to sold listings and gates it behind an approval process, and pulling comps by hand is slow and doesn't scale.
So SoldComps collapses all of that into one clean API call — pass a keyword, get back up to 240 completed sales as structured JSON — so resellers and developers get the pricing data they need without wrestling eBay's API or scraping it themselves.
SoldComps's answer
SoldComps is built in TypeScript — a Hono API backed by PostgreSQL, with a React web app. Billing runs on Stripe.
SoldComps's answer
SoldComps is used across its core audiences rather than a few big-name accounts:
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When comparing SoldComps and StackSource, you can also consider the following products.

Snap a find and see its resale value, fees and your profit before you buy.
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AI-native commercial mortgage brokerage. One submission, lender matching, and human support through closing. No upfront fees.
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Terapeak Research is an all-in-one solution that provides online sellers with an e-commerce platform research tool to better understand their listings’ performance on online marketplaces.
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CBRE Group, Inc. is a holding company that conducts all of its operations through its indirect subsidiaries
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Jones Lang LaSalle, a financial and professional services firm, specializes in commercial real estate services and investment management.
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