How much is a BGS 9 Blaine #17 worth?
The BGS 9 Blaine #17 from Gym Challenge (English) has a median market value of $128, with recent sales ranging $128 to $128 — based on 1 recent graded sale.
Is a BGS 9 Blaine #17 worth more than ungraded?
Yes. A BGS 9 copy has a median value of $128 versus about $74.99 ungraded — roughly a 1.7× 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.