No other price source publishes its measured error
How accurate are our prices, actually?
Every fair value on VaultStore is backtested against realized sales after the fact: did the price we published before the sale land close to what the card actually sold for? This page publishes that measurement directly — mean absolute percentage error (MAPE) and confidence-interval coverage — rather than asking you to trust a marketing claim. See the methodology page for how the underlying fair-value number is computed.
Measured accuracy (30d)
MAPE + CI coverage vs realized salesAccuracy metrics publish here as sample sizes reach the 50-paired-comp floor. No backtested sales have landed in this window yet. This is an honest “not enough data yet,” not a hidden number.
Freshness — how fast are we, really
% of catalog priced within 24h / 72hPriced within 24 hours
0%Share of tracked catalog cards refreshed in the last day
Priced within 72 hours
0%Share of tracked catalog cards refreshed in the last three days
New-set lag by lane
How long between an upstream set releasing and it showing up here, cataloged and priced — measured where the upstream source publishes a release date at all.
Magic
not measurableTCGCSV's /groups response exposes no release-date field, and TCGdex does not cover this game — the upstream new-set lag cannot be measured for this lane without fabricating a date.
YuGiOh
not measurableTCGCSV's /groups response exposes no release-date field, and TCGdex does not cover this game — the upstream new-set lag cannot be measured for this lane without fabricating a date.
Pokemon
not measurableTCGdex returned no sets with a releaseDate in this locale's summary list.
One Piece Card Game
not measurableTCGCSV's /groups response exposes no release-date field, and TCGdex does not cover this game — the upstream new-set lag cannot be measured for this lane without fabricating a date.
Disney Lorcana
not measurableTCGCSV's /groups response exposes no release-date field, and TCGdex does not cover this game — the upstream new-set lag cannot be measured for this lane without fabricating a date.
Pokemon Japan
not measurableTCGdex returned no sets with a releaseDate in this locale's summary list.
First-party coverage (90d)
How much of the catalog has a real VaultStore transaction behind itNo first-party comps (a real VaultStore order, auction settlement, or buylist fill) have landed in the trailing 90 days yet. Every displayed price today is still built from external vendor consensus rather than our own sales — the truthful starting point our market-making loop exists to change.
What this page will never do
- Publish a MAPE or coverage number below the 50-paired-comp floor.
- Report a lane’s new-set lag as measurable when the upstream source publishes no release date.
- Show operator-only internals — job health, environment flags, or bid-target backlogs stay on the admin surface.
- Fabricate a number when the underlying table is empty. An honest “not enough data yet” beats a fake one.