GameStop vs market value (pics of cards and pricing breakdown) : r PokeInvesting 2019 Pokemon Sun & Moon Cosmic Eclipse Holo Arceus & Dialga & Palkia GX #156 CGC 10 GEM MINT on Fanatics Collect GameStop just had their most valuable trade in of all time worth over $30k The trade in was for a fully authenticated PSA 10 Holo Gengar Pokmon card at their Grapevine, Texas location. The card I Got My Graded Pokemon Cards Back from GameStop (worth it?)