How we price cards
Every value on CardTrack is built from real marketplace data and updated daily. Here's exactly where the numbers come from, how we combine them, and how to read our confidence ratings — no black box.
The same methodology applies to every game we cover — Pokémon, Magic: The Gathering, Yu-Gi-Oh!, One Piece and Lorcana.
Where the data comes from
How a price is built
Collect completed sales
Sold prices from every source above. Asking prices are never used — a listing nobody bought is not a price.
Reject what isn't this card
Lots, bundles, proxies, damaged copies, wrong language and wrong printing are filtered out before anything is averaged. A 1st Edition sale never prices an Unlimited card.
Anchor to the liquid market
Raw values anchor to the live TCGplayer price for the exact printing; graded values use sold medians at each grade. Outliers are trimmed rather than averaged in.
Reject the impossible
Automated checks run daily: a worse condition can never cost more than a better one, a gem-mint slab is never worth less than the raw card, and impossible grading premiums are rejected rather than shown.
State the confidence
Every figure ships with a confidence level and, where we have them, the receipts behind it. Where the market is thin, the page says so.
A verifiable receipt
This is a real sale from our data, not an illustration. Click the cert number and PSA will show you the same card, grade and serial.
Sales like this one back the graded prices on Rayquaza ☆'s page — and every other card where PSA has recorded them.
Reading the confidence rating
When we don't know something precisely, we say so — rather than pretending to.
Honesty & limits
Card prices move constantly and thin markets are inherently uncertain. Our figures are aggregated market estimates for informational purposes — not appraisals, not PSA-official values, and not financial advice. We measure our own accuracy against real sold data and run a daily guard that blocks any release where raw accuracy regresses.
Prices update daily. Questions about a specific card's value? Open its page — every figure shows its source and confidence.