Scan a card or type it in. Card Comps reads the last thirty completed sales for that exact card, throws out lots, reprints and outliers, and tells you the median — alongside what the same card brings in a PSA 7, 8, 9 or 10 slab.
Completed eBay sales as recorded by SportsCardsPro. Figures from November 2026.
The card is read by Claude vision: year, set, name, number, parallel, and slab grade if it's already graded. Japanese, Korean, European and other non-English Pokémon and Magic cards are identified under their English name and language-specific set.
The matching price-guide entry is fetched and its sale-by-sale history parsed for every grade. Multi-card lots, reprints and statistical outliers are set aside before the median is taken. When parallels or error variants could match, you pick the right one.
Add a back photo and get a strict PSA pre-grade with a range. The app maps it onto the sold ladder and tells you plainly whether a grading fee pays for your copy — or whether to sell it raw.
An asking price costs nothing to type. Most of the "$200 Griffey rookies" on any marketplace never sell; the ones that do go for a tenth of that. Card Comps ignores active listings entirely and works only from transactions where a buyer and seller agreed on a price.
Four cards from one shoebox, priced in November 2026 from the last ~30 sales each. Raw copies of even iconic rookies sell for a few dollars; nearly all the value sits in the slab.
| Card | Raw | PSA 9 | PSA 10 |
|---|---|---|---|
| 1989 Topps Traded Griffey Jr. #41T | $9.75 | $39 | $269 |
| 1987 Fleer Barry Bonds #604 | $6 | $42 | $573 |
| 1989 Fleer Bill Ripken #616 FF error | $75 | $217 | $1,042 |
| 1985 Topps Mark McGwire #401 USA | $11.75 | $155 | $5,031 |