PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $32.21 |
| PSA 9 | $63.71 |
| CGC 10 | $210 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-fire-red-%26-leaf-green/pokemon-fire-red-%26-leaf-green-gastly-rarity-error-reverse-holo-63