Being that its a commercial fleet car, I'd be reluctant. That's me, personally. They are known to be beat on; it was probably driven very hard. And for the price, you could get a clean one on the private market that wasn't from a commercial fleet. Garage kept. Also, if you have the time and resources - try looking at cars in South Carolina, Tennessee, etc. Southern cars (minus Florida market) are generally cheeper than cars up north. Even if you got a ticket to get down there, you may save a lot more. Also, they don't rust as quickly. Just my $0.02.
PS - no problem w/the carfax.