Raw, it’s a $3.19 card. Slabbed as a PSA 9 it sells for 5.1× that.
| March · 1 sale · median $20 · +60% vs Dec | ||||
| 13 | eBay | 2018 POKEMON SUN & MOON LOST THUNDER #109 ONIX-REVERSE FOIL PSA 9 #109 | +60% | $19.99 |
| December 2025 · 1 sale · median $13 | ||||
| 25 | eBay | 2018 POKEMON SUN & MOON LOST THUNDER #109 ONIX-REVERSE FOIL PSA 9 #109 | — | $12.50 |