Freemium
Added on Oct 25,2026
Slabline is an AI-powered valuation, grading and portfolio protection tool for graded sports cards and Pokemon and other trading card game slabs, covering PSA, BGS, SGC and CGC.
Collectors can enter a cert number or search by card name to get a value backed by comparable sales, with prices shown across grades using recorded sales, price guides and population data. The site reports tracking more than 1.5 million cards.
Key features include Pre-Grade, which predicts the grade a raw card is likely to receive from a photo based on centering, corners, edges and surface; grading ROI estimates that rank raw cards by expected profit; a comparison of market value against a dealer's quick-sale offer; and the Slabline Score, a single 0 to 1000 rating combining insurance, concentration, storage, liquidity and provenance.
Collections can be imported by CSV from eBay, Whatnot, Card Ladder, Market Movers, Mascot or a spreadsheet, or added with Stack Scan, which scans a pile of slabs at once. Slabline Vision supports point-and-scan on a phone, including hands-free use through Meta glasses. Free tools include a grading calculator, coverage gap calculator, centering analyser and leaderboard.
Paid plans add insurance schedule PDFs for brokers, email-to-broker workflows and weekly checks for drift in insured values. Apps are available on the App Store and Google Play, and there are dedicated pages for brokers and dealers.
Pricing: the Ledger plan is free forever for up to 25 cards. Collector costs US$9.99 per month or US$99 per year with unlimited cards, and Insured costs US$14.99 per month or US$149 per year. Both paid plans include a 7-day free trial. Outputs are informational estimates, not certified appraisals.
It is suited to serious card collectors, as well as dealers and insurance brokers who need comp-backed values and grading decisions.
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