PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $18.99 |
| PSA 7 | $27.48 |
| PSA 8 | $29.81 |
| PSA 9 | $79.5 |
| PSA 10 | $405 |
| BGS 10 | $527 |
| CGC 10 | $205.87 |
| SGC 10 | $243 |
TCGplayer market price: $17.21 (as of 2026-10-20)
Market context: ungraded price +11.8% over 30 days. +21.0% over 90 days. PSA 10 premium: 21.3× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-gym-heroes/pokemon-gym-heroes-brock-s-onix-1st-edition-21