How this index works

Asking prices

What a seller is asking today, taken from live eBay listings and refreshed through the day. An asking price is an opinion, not a value - a card listed at $9,000 that nobody buys tells you about the seller, not the market. Where a range is shown, the middle figure is the median, because one optimistic listing should not set the tone.

Confirmed sales

Recorded only after a listing verifiably ends. Auctions are checked at the moment they close and logged at the exact final bid. Buy It Now sales are confirmed through eBay before being recorded, and where a best offer was accepted the true price is not published by eBay - those are shown as a ceiling, with a ≤ sign, never as a figure we do not have.

Estimated grades

For raw cards and for slabs whose grade the seller never states, this index publishes its own opinion of how the card might grade, as a RANGE with a single most-likely figure and written notes explaining it. This is assessed from the seller’s photograph by a vision model working to published PSA standards.

It is an opinion of this site and nothing more. It is not a PSA grade, is not endorsed by PSA or any grading company, and carries none of their authority. One photograph of a card front cannot show the back, cannot show corners under magnification, and often cannot show surface gloss - so the range is wide where the photo hides things, and no estimate is ever given above 9 from a single image. Where a card cannot be assessed at all, it says so rather than guessing.

Centering is measured from the borders and stated as a ratio in the notes. A card showing a sliver of the next card’s printing is treated as miscut, which caps the estimate. Nothing here should be relied on for a purchase without your own eyes on the card.

Confidence

HIGH, MEDIUM and LOW appear beside sales and estimates. On a sale it describes how the price was established: an API-confirmed final bid is HIGH, an accepted best offer is LOW because only a ceiling is knowable. On an estimate it describes how much the photograph actually showed.

What is not here

Population figures. Grading companies publish those behind their own accounts and this index does not hold them, so it does not cite them. Sale history from before this site began collecting is likewise absent - the ledger starts when the tracking started, and grows from there.