PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $13.6 |
| PSA 7 | $10.57 |
| PSA 8 | $27.51 |
| PSA 9 | $30 |
| PSA 10 | $407 |
| BGS 10 | $529 |
| CGC 10 | $56 |
| SGC 10 | $244 |
TCGplayer market price: $22.68 (as of 2026-08-29)
Market context: ungraded price -12.2% over 30 days. +18.4% over 90 days. PSA 10 premium: 29.9× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-imposter-professor-oak-shadowless-73