How much is a BGS 9 Misty's Golduck #12 worth?
The BGS 9 Misty's Golduck #12 from Gym Challenge (English) has a median market value of $295, with recent sales ranging $255 to $335 — based on 2 recent graded sales.
Is a BGS 9 Misty's Golduck #12 worth more than ungraded?
Yes. A BGS 9 copy has a median value of $295 versus about $130 ungraded — roughly a 2.3× premium for the BGS 9 grade.
Where do PokéTT's BGS 9 prices come from?
PokéTT tracks real graded sales across eBay, Yahoo Auctions and Mercari, then shows the median within the BGS 9 grade — not a single outlier sale — so the mark reflects the true market.