I love the look of Borderlands. It's definitely a game I'd like to pick up, but I won't be getting it tomorrow. I might get it around Christmas, or just after. I'm expecting the second hand value to plummet when MW2 is released, due to all the kids trying to shift it for the next exciting installment in the CoD franchise.
I'd like to get Borderlands. Getting it on release isn't a big deal to me though. I dislike the art style used, but then again: Crackdown used the 'cel-shaded' look as well, and that game is amazing fun.