PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $3.96 |
| PSA 9 | $43.57 |
| PSA 10 | $138.69 |
| BGS 10 | $180 |
| CGC 10 | $83 |
| SGC 10 | $83 |
TCGplayer market price: $1.75 (as of 2026-10-20)
Market context: ungraded price +37.5% over 30 days. +4.5% over 90 days. PSA 10 premium: 35.0× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-undone-seal/pokemon-japanese-undone-seal-castform-66