Yes, thanks for your responses. I guess my bottom line here is whether a non-refundable booking with priceline so far in advance would outweigh the savings that might come by booking early. I get the feeling that it would not. I, too, would guess my cancel probability to be 10 percent. One would have, as you say, the advantage of lowballing and creeping up until accepted. I guess that leads to another question as to if priceline accepts offers based on availability only or with some degree of 'lead time until stay' mixed in. :)