siouxi31,
The rate was only $144 at MCO, but we wanted to take ME to the resort and pick up the car the next day. That said, however, I think it may have been a glitch in National's system. Someone here posted that National's rates for August were down so I took a look, made a reservation and posted on the DIS. By the next day, the rates were back up. Someone suggested that checking rates at night might be the trick. Good luck to all!