What your comps actually say
Paste the sold prices you found and this runs the same valuation the rest of this site runs: recent sales weighted more heavily than old ones, the weighted median rather than the average, outliers flagged instead of deleted, and a range as the headline rather than one confident number. Nothing is saved and nothing is sent anywhere — the answer is computed from the address bar.
Paste at least one sold sale above. Four or five of the same card, from the last month or two, is where this starts being worth doing.
The range is the answer; the midpoint is a summary of it. A single number implies a precision five sales cannot support. When the middle half of the market spans $40 to $90, that spread is the finding — it tells you the card has no settled price yet, and that buying near the floor is a different decision from buying near the ceiling.
An outlier is flagged, never deleted. Sales more than 3.5 median absolute deviations from the middle are counted and reported. Deleting them would be deciding in advance that a real high sale was a mistake, and sometimes the high sale is the story — a bidding war on the day of a call-up is evidence, not noise. The weighted median is robust enough that a flagged sale widens the range without dragging the midpoint.
Recency is weighted, not filtered. The window widens from 30 days to 90 to 365 only when it has to, and every sale inside it is discounted by age rather than being counted in full up to a cutoff and ignored the day after.
What this cannot tell you. It cannot check that the sales you pasted are the same card — parallel, serial number, grade and grader all move a price, and mixing a raw copy with a PSA 10 produces a confident number about nothing. It cannot tell you a price is going up. And it cannot see whether a sale was a real arm's-length transaction; that judgement stays with you.
The reasoning, worked through with real spreads, is in why the same card sells for $40 and $90. When you are deciding what a sale would leave you with rather than what the card is worth, use the net proceeds calculator.