GameStop plans to purchase single Pokémon Trading Card Game cards from individuals, as long as they’re graded by Professional Sports Authenticator (PSA), extending the video game and pop culture retail chain’s trade-in model into another secondary market. According to Polygon, GameStop will soon accept single cards graded PSA 8 or higher on the popular collectible grading company’s 10-point rubric. After speaking to several locations in different states, Polygon reported that stores wi...
