PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $7.91 |
| PSA 7 | $20.75 |
| PSA 8 | $29.54 |
| PSA 9 | $104.56 |
| PSA 10 | $245.25 |
| BGS 10 | $319 |
| CGC 10 | $147 |
| SGC 10 | $147 |
Market context: ungraded price +28.8% over 30 days. +27.6% over 90 days. PSA 10 premium: 31.0× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-topsun/pokemon-japanese-topsun-cloyster-green-back-91