I have! My mom, sister and I actually got a 4 star hotel room in Houston, Texas for $40 a night through the Priceline name your own price feature. I haven't used it for flights but some of my family has. I've never heard them complain about the seats. I've looked at it before, and I would assume they just assign whatever seat is still open on that flight. Normally once you get on the plane though, if they have seats open, they will let you sit somewhere else if you want to.
at 11:25 AM on May. 15, 2009