Replying to Repairing a cracked IPhone?

Somewhere in my drunken stupor last night I thought throwing my iPhone at the ground was a good idea. The screen is now cracked beyond belief and pieces are falling out of it. I am not going to pay Apple 200 bucks to fix it for me, so does anyone have any experience with self-repairing it? I heard about a $13 kit on Amazon that is apparently very good, but I want to see what NS has to say. My other option is someone on campus who does it for $50, as I've seen his posters around campus.