Trying to figure out how much to sell my Xbox360

[Samuelc79]

I have this system, I want to exchange for PS3, but may need to sell it instead.

Be sincerely honest how much is this worth to sell.

That is what I have posted on facebook. (pic attached)

I've been looking to possibly replace my Halo Reach Special Edition Xbox360 Slim 250GB with several games, and Kinect for a PS3 and games in comparison. Some games still sealed, and I'm looking for a trade with someone that have a decent PS3 and games, etc. I take care of my stuff really well and just find out that I don't play it as much as no one I knows play on Xbox360. I even rarely play it, so basically it just not getting any use.

So later this person a couple weeks later posted this...  "  how much?  "

Now i'm wondering if I should sell it, or keep waiting or keep it.

Xbox360 Halo Slim 250GB

2 Controllers

Kinect System with unused DLC code for Gun Stringer/Fruit Ninja

Games List:

Halo Reach

Kinect Sports

Kinect Sports 2 (sealed)

Forza Horizon (sealed)

Sonic Kart Racing

Sega Tennis/arcade pack

Ninja Gaiden II

Kinect Adventures

Dance Central 2

Michael Jackson

Gears of War Triple Pack

Midnight Club LA Complete

Need for Speed Carbon

Thanks!