“Tapu Koko GX is worth around $10-$15.”Introduction Tapu Koko GX is a highly sought-after card in the Pokémon Trading Card Game. Its value can vary depending on its condition, rarity, and demand in the market. As of August 2021, the average price for a Tapu Koko GX card ranges from $10 to $30 USD. However, prices may fluctuate over time.