Poohnatic, are those final prices with fees/taxes? Because I currently have a compact car from Dollar (I think) for $105 per week, $141 total. This was regular rate. I used a code, but then checked again w/out code and got the same rate. You can get a little cheaper from Payless, but I just had such a hassle from them with my last rental last week that I didn't want to deal with them again.
Goodstarr -- For long-term rentals, you might do better with local companies if you can call around (companies that won't be on Priceline, Travelocity, etc.) I know a friend of mine got a monthly rental in St Pete for $500 when he was waiting for his new car to get shipped in.