PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $18.01 |
| PSA 7 | $49.95 |
| PSA 8 | $135 |
| PSA 9 | $171.37 |
| PSA 10 | $807.5 |
| BGS 10 | $1050 |
| CGC 10 | $122.5 |
| SGC 10 | $485 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-expansion-pack/pokemon-japanese-expansion-pack-gastly-no-rarity-92