Successful bid made on 12/7 was $16/day midsize for 1/13 - 1/16 (3 weekend days) at IAD (Dulles) -- for a total of $66.27 all in from Avis. Bid history (all for 1/13 - 1/16 at IAD): 1. On 11/30, my proposed compact bid prices, before final submission, resulted in Priceline messages, for any proposed bid under $13/day, that such a low bid was unlikely to be accepted. I bid $12/day anyway and got rejected. 2. On 12/7, I tried several proposed compact bid prices (without finally submitting them) to see where the breakpoint was that would again trigger the Priceline message that my proposed bid was so low that it was unlikely to be accepted. This time, for any proposed compact bid that was low enough to trigger the "unlikely to be accepted" warning message, I also got an additional Priceline message informing me that if I bid $17/day I had a "great" chance of being successful, and a "good" chance at $16/day. 3. I then tried several very low proposed economy and mid-size bids on 12/7 (without finally submitting them), and for each I got not only the "unlikely to be accepted" warning message, but also the the additional Priceline message telling me at what price I would have a "great" or "good chance of being accepted. 4. After steps 2 and 3 above, the breakdown of these helpful hint messages from Priceline on 12/7 was as follows: "Good chance" "Great chance" Economy $16/day $17/day Compact $17/day $18/day Midsize $18/day $19/day 5. On 12/7, I then proposed a compact bid of $14/day ($3 under the "good chance" hint), which did not trigger an "unlikely to be accepted" warning message, so I finally submitted it. It was rejected. 6. On 12/7, I then proposed a mid-size bid of $16/day ($2 under the "good chance" hint), which did not trigger an "unlikely to be accepted" warning message, so I finally submitted it. It was accepted by Avis. I am a Priceline newbie, but I wonder if Priceline programs its system to tell bidders, after an unsuccessful bid triggering the 7 day wait period, that they have a "good' chance at $2/day above the price that would actually be accepted. It seems logical that Priceline would want to avoid losing new customers by having them get frustrated by a series of unsuccessful bids. Has anybody else gotten the "good chance" and "great chance" bid price hints? Maybe Priceline programs its system to consistently suggest there is a "good chance" at $2 above the lowest price price at which the bid would be successful. Anyone who submitted a bid at the "good chance" price would feel like he got a pretty good deal, and Priceline presumably pockets some portion of the $2/day overbid. Anyway, food for thought. I suppose it would be pretty easy for Priceline to program its system to generate the "good chance" and "great chance" bid suggestions only for relatively new customers like me. Have any repeat Priceline customers out there gotten these "good chance" and "great chance" bid suggestion messages in response to preliminary lowball proposed bids?