The store's co-owner said the thief was "somebody that was familiar enough with our store to know where these items were.”

"This incident was devastating, but we will bounce back, grow, and come back better than ever," the owners of 1st Edition Collectible in New Bedford said in a statement.

Here are eight Pokémon cards that have become absurdly valuable, and why collectors are willing to pay ridiculous amounts for pieces of cardboard.