When Pokémon cards burst on the scene in the late 1990's, most players and collectors never expected that they could be worth thousands of dollars 25 years later.

Pokémon cards have turned into much more than just childhood memorabilia. They have quickly become the center of a booming ...

It’s an asset that Pokémon and non-Pokémon collectors know of and want to own,” Craig said. A first-edition 1999 Pokemon Charizard No. 4 card sold earlier this month for $336,000 by Heritage Auctions.