How much will i get if i trade for these games at GameStop?

2 ps2's, 2 nintendo DS's 2 singstar microphones 3, controllers, spiderman video game, def jam fight for NY, warriors of might and magic, highschool musical singit, legends of wresting 2 and Bratz Rock Anglez|||I would suggest you sold them online, since stores like gamestops pretty much rip you off. and they only give you store credit not actual cash for your stuff. I'd say with all the stuff you listed you'd walk out the store with less than 50 dollars.|||Maybe $50