I wish I had read this a couple weeks ago. I rented from Budget from Dallas to South Carolina from May 1st - May 8th, total was 167.00 + $19 per day for their insurance coverage. When the 167.00 hold on my account was FINALLY processed a few days later, it turned into $570.xx. I called the store, they were also completely rude with me, they didn't give me an itemized bill and wouldn't explain the charges in detail such as "this cost this much, and this cost that" so I could figure out just what the hell I was paying for.
I knew 167.00 was too cheap for that long of a trip. Also I did have unlimited mileage, had no cleaning charges whatsoever. Brought it back with a full tank and a beautiful wash inside and out that I paid for myself.
Just don't bother renting from them. Enterprise may seem more expensive at first, but they'll at least stick to their end of the deal.