Raw, it’s a $4.99 card. Slabbed as a PSA 9 it sells for 4.0× that.
We only have today’s PSA 9 price so far, so the line is flat. The dots are sales we’ve already recorded.
| May · 1 sale · median $20 | ||||
| 31 | eBay | 2018 POKEMON SUN & MOON LOST THUNDER #21 GROVYLE-REVERSE FOIL PSA 9 #21 | — | $20 |