How much is a CGC 10 Mew ex #347 worth?
The CGC 10 Mew ex #347 from Shiny Treasure ex (Japanese) has a median market value of $625, with recent sales ranging $500 to $660 — based on 3 recent graded sales.
Is a CGC 10 Mew ex #347 worth more than ungraded?
Yes. A CGC 10 copy has a median value of $625 versus about $382 ungraded — roughly a 1.6× premium for the CGC 10 grade.
Where do PokéTT's CGC 10 prices come from?
PokéTT tracks real graded sales across eBay, Yahoo Auctions and Mercari, then shows the median within the CGC 10 grade — not a single outlier sale — so the mark reflects the true market.