How much is a PSA 9 Brock's Ninetales #3 worth?
The PSA 9 Brock's Ninetales #3 from Gym Challenge (English) has a median market value of $343, with recent sales ranging $280 to $500 — based on 12 recent graded sales.
Is a PSA 9 Brock's Ninetales #3 worth more than ungraded?
Yes. A PSA 9 copy has a median value of $343 versus about $158 ungraded — roughly a 2.2× premium for the PSA 9 grade.
Where do PokéTT's PSA 9 prices come from?
PokéTT tracks real graded sales across eBay, Yahoo Auctions and Mercari, then shows the median within the PSA 9 grade — not a single outlier sale — so the mark reflects the true market.