You can trade in your Xbox in most game stores and some websites.
Maybe for an Xbox not a Xbox 360
I would trade a ps3 for a xbox 360
you can trade an xbox elite into game and get half price of the new xbox360 ! but you cant trade it and get a free one.
You can trade the Xbox 360 for store credit, and with that you can put it towards the new Xbox 360.
if you trade and pay the difference at a pawn/trade store like entertainmart or gamestop
you can trade in an xbox and use the money you get to get money off a ps3
it all depend where you trade your xbox in if it is worth the price then yes but if not you may have to put money toward the money you get from your xbox
No.
No only trade towards a PS3 you still need to purchase the PS3 after being given a trade in credit based on there lower trade in value for your model Xbox 360
Yes the PS2 could be considered worth more for trade than a Xbox, but you would need to find someone with a Xbox who wanted to trade it. It is harder to find someone to trade than to just find a Xbox on Ebay for sale and buy it, You may choose between just the console and complete packages.
not a 360
No