I've almost completely lost interest in modern games so I am looking to sell my Xbox 360 and all my games. I am looking for an approx value of everything all together. The system and games are all complete. List of games below.....thanks.

Gears of War
Enchanted Arms (sealed)
Eternal Sonata (sealed)
Mass Effect
Blue Dragon
Far Cry 2
Orange Box
Dead Space
BioShock
Elder Scrolls IV Oblivion
Fallout 3
Lost Odyssey