Where?!? I gotta get this!
it was for the PC copy only. It was a 24 hour sale, I didn't know about it until the last 15 min when a friend told me. I'm not sure if it will still work but here is the offer I used to buy the game.
Looks like there is another offer. The coupon code is GMG20-AWDF9-Q1PEY
The address to get the game is
http://www.greenmangaming.com/s/us/en/pc/games/rpgs/borderlands-2-na/
with the coupon its 38 bucks so its 2 bucks more then yesterday but still a good deal. you get the new charter that comes with the first dlc next month also if you do the pre order today.
After you buy the game they give you an activation code to use on steam so you need to have a steam account. I bought it last night my pc is downloading it from steam right now. Everything went though perfectly so its legit.