Graded
Graded slab comps from verified sales
A graded card is not a raw card with a multiplier on top. Grader, grade, printing and population all move the price independently, and the only reliable answer comes from sales of that exact slab.
What makes slab pricing hard
- The same grade from different companies trades at different prices, and that gap moves over time.
- Population matters: a low-pop 10 on a vintage card behaves nothing like a modern high-pop 10.
- Vintage editions compound the problem — a PSA 10 Shadowless card is a different market from Unlimited.
- Listings are frequently mislabelled, so unfiltered sold data mixes grades, graders and printings together.
- Trophy-tier cards sell rarely and often at auction, so an average of a whole year is meaningless.
How COMPED builds a number
- UK sold data first. Completed eBay UK sales in GBP are the primary evidence. If a card is thinly traded, the search widens to global sold data rather than falling back to a guess.
- Exact printing only. Set, number, language, finish and edition must match — 1st Edition, Shadowless, 4th print and Unlimited are priced as separate cards, as are reverse holos and regional printings.
- Outliers scrubbed. Digby drops damaged copies, lots, proxies, mislabelled graded sales and single freak results before the weighted comp is calculated.
- Condition-anchored. Vintage raw cards are anchored to realistic played grades rather than pretending every copy is Near Mint; modern cards anchor to NM.
- Community-verified. Vendors and collectors confirm prices in the Price Trainer, and that consensus nudges the headline comp on cards where sales are sparse.
- Uncertainty is shown, not hidden. When there is not enough comparable evidence, COMPED says so and shows a range with the sale count behind it.
How COMPED handles it
- Strict matching on card, set, number, printing, grading company and grade before a sale counts as a comp.
- Verified sold data as the source, with mislabelled and cross-set results fenced out.
- Auction results used for high-value trophy slabs where marketplace sales do not exist.
- GBP conversion so a UK buyer or seller sees the number they will actually transact in.
- Grade-specific chips in search and on the card page, so you can compare grades side by side.
Using slab comps to decide
Work backwards from the decision. Buying a slab? Compare against the last few sales of the same grader and grade, not the record price. Selling? The recent cluster is your realistic band. Considering grading? Put the raw comp, the expected-grade comp and your grading costs side by side before you post anything off.
Keep reading
Common questions
- Are a PSA 10 and a CGC 10 worth the same?
- No. Grader, label type and market perception all move the price, often substantially, so COMPED prices each grading company and grade from its own sales rather than applying one multiplier to a raw price.
- Why do slab prices load separately?
- Gathering verified graded sales is the slowest part of a comp. Raw prices appear instantly and graded comps load when you ask for them, so a quick single-card check is not held up.
- How are high-value trophy slabs priced?
- By auction and marketplace sales for that exact card, grade and printing. On six-figure cards a handful of public results is the entire market, so the comp is presented with its evidence rather than as a tidy average.
- Should I grade my card?
- Compare the raw comp against verified comps for the grade you realistically expect, then subtract grading and postage costs. If the gap does not clear those costs with room to spare, grading is a gamble rather than an upgrade.
- Why is a slab sometimes unpriced?
- Low population. A specific card in a specific grade from a specific grader may have no public sale in the window, so COMPED reports it as unpriced with the nearest verified evidence rather than interpolating from the raw single.
- Why don't you estimate a slab price from the raw card?
- Because grade multipliers are not stable across eras, sets or graders. A vintage 10 can be a hundred times its raw comp while a modern 10 is barely above it, so estimates from raw prices were removed in favour of verified graded sales.
- Why are vintage slabs the hardest of all to comp?
- The population is tiny, sales are years apart and one auction result can define the market. Those comps are shown with their evidence and dates attached so you can judge how current they are.