PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $0.95 |
| PSA 7 | $11.5 |
| PSA 8 | $14.36 |
| PSA 9 | $34.31 |
| PSA 10 | $99.99 |
| BGS 10 | $130 |
| CGC 10 | $49.63 |
| SGC 10 | $19.75 |
TCGplayer market price: $0.44 (as of 2026-07-05)
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-grass-energy-99