Permutations, Packing Problems, and why they get you a deal on Priceline

[btrav]

http://www.biddingtraveler.com/blog/?p=1

[lore]

I use this loophole all the time. I'm surprised Priceline hasn't done anything about it in all this time. My guess is that it's only suitable for the mathematically inclined or that they like the idea of a small group of people feeling like they're getting something special.