PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $980 |
| PSA 7 | $416.07 |
| PSA 8 | $623.15 |
| PSA 9 | $1288 |
| PSA 10 | $3313.79 |
| BGS 10 | $4308 |
| CGC 10 | $2500 |
| SGC 10 | $1988 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-promo/pokemon-japanese-promo-blastoise-p-13