What type of products / scenarios could you see this delighting the users?<p>My first thought is that variable pricing on many items, would do more harm than good -- I would much rather pick a higher price up-front, and miss out on some buyers, than confuse my audience with fluctuating prices on when they aren't expecting it.<p>I would hate two friends to realize they both bought tickets to the same thing, one whom paid twice what the other paid