PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $78.95 |
| PSA 7 | $213.75 |
| PSA 8 | $528.38 |
| PSA 9 | $2550 |
| PSA 10 | $39920.34 |
| BGS 10 | $51896 |
| CGC 10 | $23952 |
| SGC 10 | $23952 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-promo/pokemon-promo-mew-40