PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $0.31 |
| PSA 9 | $5.25 |
| PSA 10 | $18.5 |
| BGS 10 | $24 |
| CGC 10 | $11 |
| SGC 10 | $11 |
Market context: ungraded price -58.7% over 30 days. -82.8% over 90 days. PSA 10 premium: 59.7× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-tcg-classic-blastoise-deck/pokemon-tcg-classic-blastoise-deck-professor-oak-25