| August · 1 sale · median $7 · −62% vs May | ||||
| 30 | eBay | Tentacruel 021/083 ADV 1st Edition R Undone Seal Japanese Pokemon Card Japanese 021/083 | −62% | $6.90 |
| May · 1 sale · median $18 | ||||
| 14 | eBay | Pokémon Tentacruel 021/083 Undone Seal 1st Ed CGC *Blue Label* Gem 10 Japanese Japanese 021/083 | — | $18.00 |