How much is my Xbox 360 worth? - 2

I want to sell my xbox 360, headsets, and games. But i don't know how much to sell them all for. I would be selling:
Xbox 360 - 200gb
X12 Turtle Beaches
X32 Turtle Beaches
GTA 5
Far Cry 4
Destiny
Halo 4
Modern Warfare 2
Modern Warfare 3
Black Ops 2
COD: Ghosts
Advanced Warfare
Titanfall
Minecraft
Darksiders 2