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236,297 cards · 2464 sets0

Every card has a
real price. We find it.

inkwell is a price intelligence platform for trading card games. We turn third-party market data into a single fair-market estimate for every card, and show how much market activity backs it — so you know what a card is actually worth and how far to trust the number.

232,623cards priced
13games
2,464sets
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. A single asking price rarely tells you what a card actually trades for, or how much to trust it.

Our approach

inkwell Fair Value™ blends the market data we track, weights it algorithmically, and screens it with statistical guards to produce a single fair-market estimate. Every card page shows how deep the market behind that estimate is and, where the data supports one, a value range.

How inkwell Fair Value works

1
CollectThird-party market data ingested daily across all supported games.
2
ValidateStatistical guards flag anomalies, reject outliers, and verify data integrity before anything is published.
3
ComputeThe available market data is weighted and blended into a single inkwell Fair Value estimate per card.
4
ClassifyEvery estimate receives a market-depth label, so you know how much trading activity backs it.
Market classificationA market-depth label on every card page, so you know how much trading activity backs the price
Value rangeWhere the data supports one, a low–high range next to the estimate

What you get

Fair Market ValuationOne fair-value estimate per card, with a value range where the data supports one
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. Buy links are affiliate links: a commission on purchases helps keep inkwell free, and it never influences prices or rankings.
Not a marketplaceWe don’t sell cards and we aren’t paid to feature them. Prices are computed algorithmically, and an affiliate commission never changes a price or a ranking — our job is to help you understand what cards are worth.
Honest about uncertaintyEvery card page shows the market depth behind its estimate and, where the data supports one, a value range. 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 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 paid placements. Just honest estimates 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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