How much do you think I could get for this?

Okay so I have a black Nintendo GameCube with two controllers (both of them are also black, but one is kind of on the fritz). I also have these games: Luigi's Mansion, Super Smash Brothers Melee, and Starfox Adventures. I also have a memory card, but I've decided to keep it for my Nintendo Wii just in case I decide to get another GameCube game in the future. So, on average how much do you think I could get if I were to trade it in towards Wii games?