I'm not trying to discourage you, but I tried a bid lately and it didn't get accepted. I'll try again later on down the line. What I did before offering a bid though, was I looked at some of the rental car sites to see what they were charging per day, tax rates and any extra fees they assess. Once I had that information, I placed my bid. So if the average price you're looking at is, let's say $20/day for economy going directly through rental sites, then chances are $14/day might be too low to bid on Priceline. Never know though, someone could take you up on your bid. Always worth a try.