I recently purchased plane tickets through priceline. I believed that I had read all the fine print and understood that if my bid was accepted, there would be no opportunity to change my tickets in any way. What I didn't expect was that priceline would accept my bid, purchase my tickets, and then within the space of the following 2 weeks change my intinerary twice. I can not find anything on their web site that states that they can do this. If I can't make changes to our agreement, they shouldn't be able to either.