The Ungraded Mew #19 from Expedition Base Set (English) has a median market value of $350, based on 14 recent graded sales. See the full price history and live chart on the Mew #19 card page.
The Ungraded Mew #19 from Expedition Base Set (English) has a median market value of $350, with recent sales ranging $103 to $1,075 — based on 14 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.