Raw, it’s a $19.95 card. Slabbed as a PSA 10 it sells for 2.1× that.
| May · 1 sale · median $116 · +217% vs Apr | ||||
| 21 | eBay | Pokemon Japanese Promo SM 048/SM-P Tapu Koko GX Expansion 2017 PSA 10 28671422 Japanese 048/SM-P | +261% | $115.56 |
| April · 2 sales · median $37 · +68% vs Jul | ||||
| 27 | eBay | Tapu Koko GX [PSA 10] SM-P Expansion 2017 Pokemon Japanese Promo Japanese | −22% | $32.00 |
| 3 | eBay | Tapu Koko GX [PSA 10] SM-P Expansion 2017 Pokemon Japanese Promo Japanese | +88% | $41.00 |
| July 2025 · 1 sale · median $22 · −64% vs May | ||||
| 15 | eBay | Pokemon PSA 10 2017 - Tapu Koko GX Sun & Moon PROMO - Japanese 048/SM-P GEM MINT Japanese #048 | −64% | $21.79 |
| May 2024 · 1 sale · median $60 | ||||
| 17 | eBay | Pokemon Japanese PSA 10 Tapu Koko GX 048/SM-P Promo Expansion Pack Holo Card | — | $60.00 |