How much is a pocket monster called goldeen?

Goldeen is a Water-type Pokémon introduced in Generation I. In Pokémon games, its value can vary based on factors like rarity and in-game mechanics, but it typically doesn't have a monetary value outside of trades. In Pokémon Trading Card Game terms, its cards can range in price depending on their condition and rarity, often between a few cents to several dollars. For specific pricing, it's best to check current market listings.