More: A rare Italian vase bought at Goodwill for $3.99 was just sold for over $100,000 This article originally appeared on USA TODAY: How much are your old Pokémon trading cards worth?

Their uniqueness and rarity give them value. Some of the ... Gods Unchained is the world's first free-to-play multiplayer blockchain-based game. The NFT trading card game uses the Ethereum blockchain.