How much would Gamestop give me for Battlefield 3 Limited Edition?

I want to trade in Battlefield 3 LE that is in brand new condition towards Modern Warfare 3. How much do you think I would get for it?How much would Gamestop give me for Battlefield 3 Limited Edition?
I would say your a horrible K/D'r kid that does not know what good gaming is. Plus your console player so you lack brains to preform the tasks needed to make battlefield3 fun. Like being cooperative and using real life physics. Please do not purchase a good game like this ever again. Plus if you own a console take it outside put it under your moms tire before she wakes up and goes to work and let her do the rest.
If you trade in a game towards MW3 you get an extra 30% store credit, so you'd get around $25-30 for Battlefield. The disc condition doesn't matter, if it works we'll take it.How much would Gamestop give me for Battlefield 3 Limited Edition?
I got the key with 35eruo from

http://www.gamehos.com/goods-364 ... EditionPCCdKey.html

If yu want. you can make a offer in the livechat, support will give you more discount.
Probably like 25-30 the game really flopped.How much would Gamestop give me for Battlefield 3 Limited Edition?
35
30 bucks but I dought that you'll like mw2