Last year, hundreds of vintage prototype, test, and presentation Pokémon cards believed to date back to the creation of the game in the 1990s sold for auction to various collectors for hundreds ...

Package illustration for "Pokémon Mystery Dungeon: Explorers of Sky" (VG) (Japanese) Package illustration for "Pokémon Mystery Dungeon: Explorers of Time and Darkness" (VG) (Japanese) Package ...

while the coveted holographic cards of Pokémon found in "Dragon Discovery," like Pikachu, are fetching up to $30 each at the time of writing. Saleen Martin contributed to the reporting of this story.