The Ungraded Mewtwo ex #101 from EX Ruby & Sapphire (English) has a median market value of $200, based on 27 recent graded sales. See the full price history and live chart on the Mewtwo ex #101 card page.
The Ungraded Mewtwo ex #101 from EX Ruby & Sapphire (English) has a median market value of $200, with recent sales ranging $62 to $650 — based on 27 recent graded sales.
Where do PokéTT's Ungraded prices come from?
PokéTT tracks real graded sales across eBay, Yahoo Auctions and Mercari, then shows the median within the Ungraded grade — not a single outlier sale — so the mark reflects the true market.