INDEXCoindex's bullion figure is a median asking premium: across the last 30 days, the dollars over melt that distinct Reddit sellers asked for one exact product. It is what sellers asked, not what anyone paid. Coindex publishes it only when at least two distinct sellers asked and their asks agree well enough to summarize; otherwise the page says why the figure is withheld.
Asking prices are not sold prices
An asking price is what a seller posted. A sold price is what a buyer paid. They differ: sellers take offers, items go unsold, and a post marked sold rarely says for how much. Coindex does not publish Reddit sold prices, because a post marked sold does not reliably record a sale price.
An eBay listing shown as sold after an accepted best offer hides the amount; the price it displays is the last asking price. Coindex never treats that number as a sale price.
What counts toward the figure
- For-sale posts on r/Pmsforsale and r/CoinSales, from sellers with a trading record on the subreddit.
- Each listed item is resolved to one canonical product by deterministic rules. An item the rules cannot identify with confidence is left out rather than guessed.
- Premium = the per-item asking price minus melt at the spot price on the day of the post. A premium keeps the spot basis it was measured against; it is never restated at today's spot.
- One seller is one observation: a seller's reposts and cross-posts of the same product count once, at the cheapest ask.
- Lots, proofs, privy marks, graded (slabbed) coins and special finishes are held out of a plain product's figure.
- An ask more than 15% below its own melt value is treated as a likely data error and left out.
Observation window, counts and freshness
- The window is the trailing 30 days. The figure is recomputed daily and carries its as-of date.
- Every figure ships with its distinct-seller count, so a thin figure can be told from a deep one.
- The spread shown beside a median is the median absolute deviation: how much asks differ from each other, not a range to price within.
- Product pages are built daily with the figure baked into the HTML, then refresh spot and the figure when the page loads. Spot moves by the minute; every melt value states the time of the spot price it used.
When a figure is withheld
A withheld figure keeps its seller count, unless that count no longer measures anything (a withdrawn figure, or a product never priced). The page names the reason:
- Too few sellers: fewer than two distinct sellers in the window.
- Subreddits disagree: the two subreddits price the product further apart than that metal's usual band.
- Premium tracks spot: the premium rises and falls with spot, so a fixed dollar figure would mislead.
- Stale: no recent asks; the previous figure is withdrawn rather than left standing.
- Not tracked: the product is identified, but Coindex does not compute a figure for it yet.
What the figure is not
- Not a cross-venue price. It comes from one venue (Reddit) today; dealer and auction prices are not blended in.
- Not a dealer quote or an offer. Coindex does not sell bullion.
- Not a licensed price-guide value. No third-party price-guide figure appears on these pages.
Machine-readable access
Each product's figure, its observations and its withheld state are served as JSON, for example the American Silver Eagle. In browsers that support WebMCP, coindex.app also registers read-only tools for catalog search, this reference, and melt value. See the bullion product pages.