GameStop said the event is the most valuable single trade-in in the company's history.
A customer traded in a fully-authenticated PSA 10 Holo Gengar Pokémon card worth more than $33,000 at a Grapevine, Texas ...
A North Texas GameStop hit a milestone when it received a PSA 10 Holo Gengar Pokémon card trade-in valued at $30,494.70.
One of the original 151 Pokemon and a fan-favorite, Gengar, became part of GameStop history. A customer traded in a 2003 trading card featuring the character for $30,494.70.