SlabScore — Card Grading Calculator & ROI Analyzer

Score any card 0-100 on grading ROI. PSA, CGC, BGS, TAG, ACE pricing on eBay, TCGPlayer, PriceCharting, Cardmarket + 130point.

## Score any card in seconds. SlabScore is the free Chrome extension that tells you whether a raw card is worth grading — instantly, on every supported marketplace. Stop spending submission fees on cards that won't earn it back. A floating pill appears in the bottom-right of the page with the SlabScore (0-100) and a clear recommendation: STRONG GRADE / GRADE / CONSIDER / MARGINAL / SKIP. Click it for the full breakdown — profit math by grade, market depth, alternatives, and one-click save to your slabscore.io portfolio. ## What you get ✓ Instant grading-ROI math — raw price → PSA 8 / 9 / 10 profit projections accounting for grading cost ✓ 4-component score — Profit Potential, Market Depth, Grade Premium, Downside Protection (Pro) ✓ Multi-grader awareness — PSA, CGC, BGS, TAG, ACE pricing with a "best fit" tier suggestion per card ✓ Smart matching — variants, alternatives, foil-sibling exclusion, and already-graded slab detection (auto-pivots to spread-vs-PSA-10 mode) ✓ Listing-aware adjustments — flags Lightly/Moderately/Heavily Played listings; uses eBay's own grading-upsell price when offered ✓ Search-results ranking sidebar — when PriceCharting redirects to a search page, the extension scores the top 5 candidates so you can pick the right one ✓ Match-confidence pill — High/Medium/Low chip tells you how reliable the URL match is ✓ One-click save to portfolio — separate buttons for Raw and Watchlist destinations ✓ Quick lookups — direct deep-links to PSA Pop Report + 130point comparable sales ✓ History tab — review every card you scanned this session, with score + recommendation ✓ Privacy-first — no analytics on which cards you view; only anonymous install + daily usage counts ## Supported marketplaces - eBay (US, UK, CA, AU) - TCGPlayer - PriceCharting (product pages + search-results pages) - Cardmarket (EU) - 130point (sold-comp database) ## Supported card types Pokemon, Yu-Gi-Oh, Magic: The Gathering, and sports (baseball, basketball, football, hockey, soccer). Other trading-card games are scored when PriceCharting has them in its catalog. ## Free vs Pro The extension is free with anonymous use up to 60 analyses/hour. Sign in for higher limits (free tier: 100/hr; Pro: 300/hr; Unlimited: unlimited). Pro ($9.99/mo) unlocks the full 4-component score breakdown inside the badge, 100-card portfolio, and cloud sync between devices. Free is plenty for casual collectors; Pro is for active grading. The web app at slabscore.io adds the heavier tools — Plan Submission, batch builder, multi-grader fee comparison, submission-date predictor, leaderboard. The extension is the in-the-flow scoring layer; the web app is where you act on it. [Pricing →](https://slabscore.io/pricing) · [Privacy →](https://slabscore.io/privacy) · [Support →](https://slabscore.io/support) · [Discord →](https://discord.gg/FA3ZMRwHfA) ## Available languages English, German, Spanish, French. ## Permissions - contextMenus — adds "Analyze with SlabScore" right-click menu - storage — caches analyses and your preferences locally - activeTab + tabs — reads the current tab's URL when you context-click; opens auth/welcome tabs - alarms — schedules a daily usage-stats heartbeat - host_permissions: slabscore.io — API calls (analyze, save, session) The extension does NOT track which cards you view — content-script extraction runs entirely on-device. Only an opaque install ID and daily aggregate counts are sent home. Full policy at slabscore.io/privacy. ## Built by collectors, for collectors SlabScore is independently built and not affiliated with PSA, CGC, BGS, TAG, ACE, eBay, TCGPlayer, PriceCharting, Cardmarket, or 130point. All trademarks belong to their respective owners. Stop guessing which cards are worth grading. Start making data-driven decisions. Learn more at slabscore.io.