15 bucks? Free shipping since I had other stuff too, very nice.. I thought about it at 20 bucks, but at 15 delivered I couldn't resist.
I rented it when it came out and it was suprisingly fun jumping around from building to building getting those orbs that give you more energy for superhuman power. It wasn't a fantastic game, but it was really good and seemed like it would get more fun as I went along. I played maybe for 4 hours worth in a weekend.