LIBRARY
Your collection, on your shelf.
Every lot you've ever owned, valued at the same fair-market price the marketplace runs on. Cost basis, P/L, set completion, daily movers — all in your binder. Free for collectors.
What the binder shows →VaultStore is a Library for what you own, a Marketplace where you buy and sell with no platform fee, and a Pricing Authority whose every published number carries its receipt — sample size, sources, last sale, methodology link.
Every lot you've ever owned, valued at the same fair-market price the marketplace runs on. Cost basis, P/L, set completion, daily movers — all in your binder. Free for collectors.
What the binder shows →Buy any card from any seller; list any card to any buyer. The number above the buy button is the same fair value our portfolio uses, so seller and buyer see the same truth. No bidding-war hidden fees, no quiet rake.
See live listings →Trimmed median over 30 days, 95% confidence interval, sample size, last-sale timestamp, attribution. A daily watchdog flags drift against external comparables. Public methodology. Public API. One-line embed.
Read the methodology →Marketplaces, insurance carriers, and portfolio apps cite VaultStore prices because every response carries a version, a confidence tier, a sample size, a methodology URL, and an honest insufficienttier when we don’t know.
<script src="https://vaultstore.com/embed/price.js" async> </script> <div data-vs-price-card-id="9f4e…b3a1"></div> // renders fair value, 95% CI, sample size, // velocity, and a "How we measure" link. // No API key. Inline-styled. CORS-open.