How much can i get for a regular Xbox, 3 controllers, and 38 games at Gamestop?

the games are grabbed by the ghoulies,tony hawk underground 2, madden 06, all star baseball 2004, NFL street 2, NBA street V3, nfl fever 2004, 50 cent bulletproof, blitz the leauge, nba live 06, nhl 06, NBA street V2, madden 2005, nba ballers, true crime streets of LA, NCAA 08 football, nba ballers phenom, toxic grind, the sims, ncaa 07 football, tony hawk underground, madden 07, scarface, rapala pro fishing, nbalive 05, 007 agent under fire,espn 2k5, fight night round 3, GTA san andreas, madden 08, UFC tapout, nba live 07, need for speed underground 2, mortal kombat deadly alliance, MLB 2k6, ncaa football 2005/topspin, star wars clone wars/tetris