It measures a trading card’s centering from a photo to a hundredth of a millimetre, compares it with the centering lines that PSA, BGS, CGC, SGC, TAG and ACE publish, then prices every grade the card could get from the sale prices you enter and applies each service’s current fees and tiers to show the expected net of grading versus selling raw — and which service and tier maximises it.
No. Every figure is an estimate built from published standards, published fees and the prices you enter. Grading companies decide grades at their discretion and change standards and fees without notice; prices move. Check the official sources before you spend money.
On synthetic photographs with known answers the outline is found to within about a pixel and centering within 1.5 percentage points in every test case, typically within half a point. Real photos add glare, sleeves and shadows, which is why every corner and guide line can be corrected by hand with a magnifier.
, renewing monthly until you cancel, plus any tax we must collect. The demo card is free so you can see a full verdict before subscribing. There is no account: your subscription is a licence key that lives in your browser.
Open the subscription panel in the app and choose Manage subscription; that opens Stripe’s secure page where you can cancel in a few clicks, change your card or download invoices. Cancelling stops future charges and your access continues to the end of the paid period. You can also email us.
Payments are final and non-refundable, including partial months, except where the law gives you a right we cannot exclude. If you are a consumer in the EU or UK you may withdraw within 14 days of subscribing and receive the first payment back less a proportionate amount for the days of service you used.
In the subscription panel, enter the email and the last four digits of the card you subscribed with. We ask Stripe for your subscription and re-issue the key. Both must match; the email alone is not enough.
None. Photos, measurements, the prices you enter and your batch stay in your browser. Card searches are forwarded to PriceCharting without being stored. Stripe collects payment data on its own pages under its own policy. See the Privacy page.
Yes. SlabbyPrep is for adults 18 and older.
PSA, Beckett (BGS), CGC Cards, SGC, TAG and ACE. Each service’s lines and fees are quoted with the date they were checked on the Standards page.
PriceCharting’s price guide, used with their permission and credited with a link to the card’s page wherever a price appears: the ungraded price, generic prices for grades 1–9.5 and each company’s own top-grade price. You can also enter prices by hand. Fees come from each grading service’s published table.
No. Those are trademarks of their owners, and SlabbyPrep is not affiliated with, endorsed by or sponsored by any of them.
Yes. It runs in the browser on any recent phone, tablet or computer; on a phone you can shoot the card directly from the app.
Questions we didn’t answer: [support email not configured].