Thanks, this was my first bidding with priceline so probably made a lot of mistakes. My goal was a compact car for Kona and I started bidding at $19/day for a midsize, thinking of going down in car size and up with the price. I ran out of options and got an e-mail from priceline a few days later inviting me to revisit the bid. I entered $29/day but somehow "Economy" was selected and I won that bid for a car from Hertz. Coincidentally, an economy car from Alamo would have been the same rate and I would have saved the priceline fees as well as could have used the damage waiver from my credit card. When the win was posted there was an option to upgrade to compact for $2/day, but by the time I had decided that I will need the upgrade the option was no longer available. All in all I estimate that going through priceline and being an inexperienced bidder will cost me roughly double than renting from Alamo directly without pre-payment. In summary, my win is: KOA Kona-Kailua Economy Hertz $29/day for 05/01/09 - 05/03/09