PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $215 |
| PSA 7 | $322.4 |
| PSA 8 | $430 |
| PSA 9 | $840 |
| CGC 10 | $1750 |
Market context: ungraded price +0.0% over 30 days. +11.0% over 90 days.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-blastoise-stage-error-2