I'd say with him selling the xbox and all those games.
Worth 200 max. Each game is worth about $8 if that. Xbox 360's sell used at gamestop for $90. The controllers aren't much, about $20 for wireless, $5 for wired. Headsets are about $10.
Due to lack of me wanting to do math I'd say you're att >200.
Bullstuff. RDR and BC2 are recently released games so that means they're like 50 bucks at your local gamestop or other store. I'd sell those for like $35 each, maybe more.
Wireless adapter is worth over $100 so I definitely wouldn't bump the price to $20.
And I saw a refurb xbox 360 for 120 at gamestop.