See instant grading ROI analysis on eBay and PriceCharting listings. Know if a card is worth grading before you buy — no copy-pasting, no tab switching.
Browse eBay or PriceCharting like you normally do. The extension detects card listings automatically.
A floating badge shows the SlabScore (0-100) with a recommendation: STRONG GRADE, GRADE, CONSIDER, or SKIP.
One-click save to your SlabScore portfolio, or share the score to Discord/Reddit with the Share button.
Automatically identifies card listings on supported marketplaces. No clicking required.
PSA, CGC, TAG, BGS, and ACE fee calculations and tier comparisons.
See projected value and profit at PSA 8, 9, and 10 with grading costs factored in.
Understand why a card scored what it did: Profit Potential, Market Depth, Grade Premium, Downside Protection.
One-click save adds the card to your SlabScore dashboard with all pricing data pre-filled.
Copy a formatted score snippet to clipboard for Discord, Reddit, or group chats.
Works on eBay.com, eBay.co.uk, eBay.ca, eBay.com.au, TCGPlayer.com, and PriceCharting.com
Yes, completely free. No account required for basic scoring. Sign in to save cards to your portfolio.
Chrome extensions are desktop-only. Use the SlabScore web app on mobile at slabscore.io/app.
Only the card name and price from the page you visit. No browsing history, no personal data. See our Privacy Policy.
Scores use real-time PriceCharting data with a 4-component algorithm: Profit Potential (40%), Market Depth (20%), Grade Premium (25%), Downside Protection (15%).
Yes. Anonymous users get 60 analyses per hour. Sign in for 100+ per hour and the ability to save cards to your portfolio.
Join hundreds of collectors who check SlabScore before every purchase.
Add to Chrome — Free