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220,675 cards · 2400 sets

Every card has a
real price. We find it.

inkwell is a price intelligence platform for trading card games. We aggregate data from multiple independent marketplace sources and compute a single fair-market estimate for every card — so you always know what something is actually worth, not just what one store lists it for.

217,012cards priced
13games
2,400sets
24hrefresh cycle

The problem

Card prices are fragmented across dozens of marketplaces, each with different inventory, sellers, and incentives. A card can be $12 on one platform and $18 on another. Most pricing tools just show you one vendor’s number — that’s a listing, not a market price.

Our approach

inkwell Fair Value™ aggregates pricing data from multiple independent marketplace sources, weights them algorithmically, and produces a single fair-market estimate. No single vendor controls the number you see. The result is a price you can actually rely on.

How inkwell Fair Value works

1
CollectMarket data ingested daily from multiple independent sources across all supported games.
2
ValidateStatistical guards flag anomalies, reject outliers, and verify data integrity before anything is published.
3
ComputeSources are weighted and blended into a single inkwell Fair Value estimate per card.
4
ClassifyEvery price receives a market classification — liquid, moderate, thin, collector, or single-source — so you know the depth behind it.
Market classificationLiquid, moderate, thin, collector, or single-source — so you know the depth behind every price
Value rangeFor thin markets, the spread across sources — not just a point estimate

What you get

Fair Market ValuationMulti-source blended estimates, not single-vendor listings
Price historyDaily snapshots and 7/30-day trends for every card
Portfolio trackingTrack your collection value over time with daily snapshots
Price alertsGet notified when cards hit your target price
Set analyticsTotal set values, top cards, rarity breakdowns
Sealed productsBox and bundle pricing with historical trends
Market trendsCross-game movers, gainers, losers, and volatility
Market classificationKnow the market depth behind each price before you act

Games we cover

Magic: The GatheringPokemon TCGYu-Gi-Oh!One PieceDisney LorcanaStar Wars: UnlimitedFlesh and BloodDigimonDragon Ball SuperGundamRiftboundGrand ArchiveUnion Arena

Coverage varies by game. Major titles like MTG, Pokemon, and Yu-Gi-Oh! have the deepest data. Newer and smaller games are continuously expanding.

What we believe

Free, foreverEvery feature is free — price history, portfolio tracking, alerts, set analytics, all tools. No premium tier. No paywall. Affiliate commissions fund the platform but never influence prices or rankings.
IndependentNo single marketplace controls what you see. Prices are computed algorithmically from multiple independent data sources. We don’t sell cards — we help you understand what they’re worth.
TransparentEvery price shows how confident the estimate is and what market conditions look like. When data is thin, we say so. You always know how much signal is behind the number.

Why inkwell exists

inkwell started with a simple frustration: card prices are scattered across dozens of sites, each showing a different number. Whether you’re a lifelong collector, a parent helping a kid build their first deck, or an investor managing a portfolio — everyone deserves transparent, reliable pricing they can trust.

We built inkwell to be the single, free source for fair-market card values across every game. No hidden agendas, no premium tiers, no single vendor controlling the number you see. Just honest data for anyone who cares about what their cards are actually worth.

Operated by Inkwell Markets LLC.

Questions, data corrections, or partnerships: hello@inkwell.gg

Follow us on @inkwellgg

Legal

Card names, images, and game data are trademarks and copyrights of their respective publishers. inkwell is not affiliated with, endorsed by, or sponsored by any TCG publisher.

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