The short answer
Two of the four things CompsAPI's comparison page says about CompSniper are out of date. Its page, eBay Sold Data APIs Compared, October 2026, lists CompSniper at 90 days of history and a Best Offer "flag only". CompSniper has had up to 3 years of history on every plan, free included, and returns the real accepted Best Offer price.
The price rows are right: CompsAPI is cheaper per request. What the page does not measure is accuracy. On the same 100 searches, 28.8% of CompsAPI's rows were the wrong item, against 6.3% for CompSniper.
Their table, checked
The CompSniper row from CompsAPI's comparison table, as published in October 2026, with what each vendor's own docs say today.
| Row | CompsAPI says | CompSniper's docs | Verdict |
|---|---|---|---|
| History | 90 days | Up to 3 years on every plan, free included (/v1/research/sold). The regular sold search covers about 90 days. | Out of date |
| Best Offer price | Flag only | Real accepted price with bestOfferPrice=true, no extra cost. | Out of date |
| Rows per request | 240 | Up to 240 sold rows per request. | Correct |
| Best price per 1,000 calls | $1.10 | $549 for 500,000 requests, which is $1.10 per 1,000. | Correct |
History: 3 years, not 90 days
CompSniper's regular sold search returns the most recent sales, about the last 90 days, with full listing details. A separate endpoint, /v1/research/sold, goes back up to 3 years on all 8 eBay sites with the same key, on every plan including free (docs). CompsAPI offers up to 1,095 days on its Growth plan and above, and 1 year on its Free and Starter plans. So on the free plan, CompSniper goes back further.
Best Offer: the accepted price, not a flag
eBay shows the asking price on a sale that closed on an accepted offer. With bestOfferPrice=true, CompSniper returns the price the seller accepted where it is available, at no extra cost (docs). CompsAPI also returns accepted prices, so on this point the two are level.
Price: CompsAPI is cheaper per request
This part of their page holds up. CompsAPI sells 5,000 requests for $9, 25,000 for $29 and 100,000 for $79; CompSniper sells 2,000 for $9, 10,000 for $29 and 50,000 for $79. At the top listed plans CompsAPI works out to $0.50 per 1,000 requests and CompSniper to $1.10. If you run millions of requests a month and can live with more cleanup, that gap is real.
What neither page measures
Both vendors compare history, Best Offer and price. Neither publishes how many of the returned rows are the item you searched for, which is what decides whether a median is usable. We ran the same 100 searches through both on October 20, 2026:
| Measured | CompSniper | CompsAPI |
|---|---|---|
| Wrong items, all searches | 6.3% | 28.8% |
| Wrong items, trading cards | 4.6% | 18.0% |
| Wrong items, electronics | 12.7% | 48.3% |
| Wrong items, fashion | 2.5% | 32.5% |
| Wrong items, collectibles | 6.6% | 34.7% |
| Real sales found | 58.8% | 52.9% |
| Median off, typical search | 5.0% | 14.6% |
Lower is better for wrong items and median off; higher is better for real sales found. Per-search results are in the published data (CSV). Nearly half of CompsAPI's electronics rows were a different model, an accessory or a part, which is why its median landed almost three times further from the true price.
Which one to choose
- Pricing apps, comps and valuations: CompSniper. Fewer wrong items means a median you can use without cleaning it yourself.
- History on a free or low plan: CompSniper, 3 years on every plan against 1 year on CompsAPI's Free and Starter.
- Several eBay countries in their own currencies: CompSniper covers 8 eBay sites, each in its local currency; CompsAPI is US first.
- Lowest cost per request at very high volume: CompsAPI, if you clean the results yourself.
For all nine sold data APIs side by side, see the best eBay sold listings APIs in 2026, tested for accuracy.
How we checked
CompsAPI's claims are quoted from its comparison page as published in October 2026. CompSniper's and CompsAPI's features and prices come from their public docs and pricing pages, checked October 19 to 21, 2026. Accuracy comes from our blind test of October 20, 2026: 100 searches written in advance with a definition of the correct item, sent to five APIs on the same day with default settings, and 18,450 unique rows labeled without knowing which API returned them. Full method on the methodology page. If either page changes, we will update this one.
FAQ
Is CompsAPI or CompSniper better?
For most uses, CompSniper: in our blind test of 100 searches it returned 6.3% wrong items against 28.8% for CompsAPI, it has 3 years of history on every plan including free, and it covers 8 eBay sites in their own currencies. CompsAPI is cheaper per request at very high volume ($0.50 per 1,000 at 1 million requests a month, against $1.10 at CompSniper's 500,000 plan).
How much sold history does CompSniper have?
Up to 3 years of eBay sold history on every plan, including free, through its /v1/research/sold endpoint. Its regular sold search covers the most recent sales, about 90 days. CompsAPI's comparison page lists only the 90 days.
Does CompSniper return the accepted Best Offer price?
Yes. With bestOfferPrice=true it returns the price the seller accepted where it is available, at no extra cost. CompsAPI also returns accepted Best Offer prices.
Which is more accurate, CompsAPI or CompSniper?
CompSniper, in our October 20, 2026 test: 6.3% of its rows were the wrong item against 28.8% for CompsAPI, and its median was 5.0% off the true price on a typical search against 14.6%.
Which is cheaper, CompsAPI or CompSniper?
CompsAPI, per request: $9 buys 5,000 requests against 2,000 at CompSniper, and its top plan works out to $0.50 per 1,000 requests against $1.10. Both have 100 free requests a month.