PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $8 |
| PSA 8 | $41.01 |
| PSA 9 | $108.05 |
| PSA 10 | $124.99 |
| BGS 10 | $162 |
| CGC 10 | $70 |
| SGC 10 | $75 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-imposter-professor-oak-1999-2000-73