Raw, it’s a $24.00 card. Slabbed as a PSA 10 it sells for 18× that, and PSA has only ever handed out 16 of them.
| June 2025 · 1 sale · median $425 · +215% vs May | ||||
| 16 | eBay | Pokemon Onix EX Fire Red & Leaf Green Reverse Holo #42 PSA 10 Gem Mint | +215% | $425.00 |
| May 2024 · 1 sale · median $135 · +43% vs Mar | ||||
| 15 | eBay | PSA 10 GEM MINT Onix Reverse Holo 42/112 EX Fire Red & Leaf Green Pokémon Card | +43% | $135.00 |
| March 2024 · 1 sale · median $94 | ||||
| 31 | eBay | PSA 10 Onix 42/112 EX Fire Red Leaf Green Reverse Foil Pokemon Card | — | $94.27 |