Check the websites specials pages for each company. Look on mousesavers.com for codes and coupons. Also rentalcodes.com posts discount codes. If you are a member of sams, bj's, costco...they also have coupons. And keep trying every couple of days. The rates seem to fluctuate like the wind! a lot of the rate codes out there now seem to expire the end of June. But they will be replaced by new codes for other discounts. Just be persistant!!