I've recently taken to PC gaming and I'm just going to use my Xbox for Guitar Hero. So, here we go.
Kinect - Used maybe 10 times, never really got into it. $70
Skyrim, Mortal Kombat, Deus Ex, L.A Noire, Batman: Arkham City, Prototype 2 - All working fine - $40 Each
Fallout: New Vegas, Saints Row: The Third - Work fine, may not have case for Fallout - $30 Each
Star Wars: The Force Unleashed, Saints Row 2, [Prototype], COD 4, UFC 2010, Red Faction: Guerrilla, Street Fighter 4, Blitz 2: The League, Alpha Protocol, YooStar 2 (Kinect), Dynasty Warriors 6, COD 3, You're In the movies - All should work, may not have cases for all of them - $20 Each $15 Without cases.
I will be updating soon with more games, and I am taking trades.