How much is a PSA 7 Koga's Ditto #10 worth?
The PSA 7 Koga's Ditto #10 from Gym Challenge (English) has a median market value of $173, with recent sales ranging $160 to $180 — based on 6 recent graded sales.
Is a PSA 7 Koga's Ditto #10 worth more than ungraded?
Yes. A PSA 7 copy has a median value of $173 versus about $126 ungraded — roughly a 1.4× premium for the PSA 7 grade.
Where do PokéTT's PSA 7 prices come from?
PokéTT tracks real graded sales across eBay, Yahoo Auctions and Mercari, then shows the median within the PSA 7 grade — not a single outlier sale — so the mark reflects the true market.