The car companies change their rates on a regular basis. The rates we provide for you on your search are the rates they provided at the moment of your search. We recommend you just book the best rate for your requirements at that time. You can keep checking back on our website, and if you find a lower rate, you may book it, and cancel the reservation you made previously. Quite often rates go up closer to your dates, especially during peak seasons, so it is best to grab a rate to hold so you have a starting point in case the rates do increase.