Originally Posted by
sosafan
The previous answer says it all, but just to be clear, once you book a rate, it does not go up or down. (Sometimes they will try
to charge you a higher rate, but if you show a printed reservation, I've always gotten the booked rate.)
Rental car reservations are much easier to cancel than airfares or many hotel reservations.
Just to be clear, your booked reservation price does not go up or down, but rates certainly do--sometimes multiple times a day. That's why people regularly check rates or
use AutoSlash to track it for them.