When I first started looking to rent for August, Thrifty and National were both over $500 for a full size car for sixteen days. I finally got National down to $445 but I thought it was still too much. I just checked Thrifty this evening and the rate for a full size car has dropped to $132.78 a week with an additional 10% off using the WMRT code. My rental is now $366 for the sixteen days, a savings of almost $80 over National. My National rate has since gone up to $485.