Sold-comps methodology

Comps are drawn from eBay sold (completed) listings, transactions where an item actually changed hands. We do not use active listings, Buy-It-Now asking prices, or aggregated price-guide values. When a marketplace other than eBay is used for a specific item, it is labeled on that item.

Each item's summary reflects sales from the last 90 days at the time the comps were last refreshed. The "last checked" date shown beside each summary is the date of the most recent sale in that item's sample.

Graded prices are grouped by grader and grade (for example, PSA 10 and CGC 9.5 are separate rows), because a single grade point can move value substantially. Ungraded ("raw") sales are shown separately and labeled, since raw condition varies from copy to copy.

Within each grade we report the median sale, which resists distortion from a single unusually high or low result far better than a mean. We also show the low-to-high range so you can see the spread the median sits inside.

When a grade has four or more sales, we trim clear outliers before taking the median: sales below one-third of, or above three times, the within-grade median are excluded. This removes mis-listed, damaged, or lot sales without hand-picking results. With fewer than four sales, every sale is kept and the small sample size is shown so you can weigh it accordingly.

Reported figures are the sale prices as recorded by the marketplace. They are not adjusted for shipping, taxes, or seller fees. Treat them as sale-price reference points, not net-to-seller or all-in buyer costs.

Comps are refreshed on a rolling basis, prioritizing the most-viewed and most-volatile items. The "last checked" date on each item is the honest indicator of how current that specific sample is.

If a figure looks wrong, tell us and we will re-check the source sales. We would rather show a smaller, verifiable sample than a larger one we cannot stand behind. Mint Condition does not publish price estimates, trend percentages, or population claims we cannot source.