Could anyone give me a rough estimate of what I could get, either in cash or store credit, for a used XBox 360. Have the console package and original bags. Includes:XBox 360 Pro Package which includes: 1 Wireless Controller 20 GB HDD HD AV Cable Power Cable ...etc. and Gears of War. Just wanna get some rough estimates on what you guys would pay for this so I don't think I'm getting ripped off at the store or online. I'm just getting tired of all my video games, and have just decided to stick with the Wii.