Is that price at Orlando Airport?
That seems like a good price for a Minivan at an airport... was running $500+ a long time. I assume that is with taxes but no insurance.
I would check once a week and use Google to find some care rental places that are not on the big travel sites.
For chains, I have found Dollar to have good prices but their cars can be a little more beat up...
For any rental, If you don't take insurance write down all damage on the contract and get it signed by someone.