Starting April 2, 2012, the retailer will no longer accept the trade-in of GameCube consoles, games, and accessories.
GameStop is ending their part in the used GameCube consoles, games, and accessories market. According to a banner located at the bottom of the Trade-Ins page on their US site and similar signs in stores, GameStop and EB Games will no longer accept trade-ins on any GameCube consoles, games, or accessories starting April 2, 2012.
Nevertheless, don’t fret. It is likely that GameStop will continue to sell their remaining stock of GameCube consoles, games, and accessories, just as they did when they stopped accepting the trade-in of other consoles and handhelds.