PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $4.07 |
| PSA 7 | $22 |
| PSA 8 | $26.96 |
| PSA 9 | $33.69 |
| PSA 10 | $216.78 |
| BGS 10 | $282 |
| CGC 10 | $96.35 |
| SGC 10 | $130 |
TCGplayer market price: $5.47 (as of 2026-08-29)
Market context: ungraded price -26.7% over 30 days. -19.4% over 90 days. PSA 10 premium: 53.3× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-imposter-professor-oak-73