I have had very bad experiences with booking car rentals on Priceline.com. Do not use them for car rentals, especially York Car Rentals. Priceline shouldn't even be doing business with this shabby car rental company.
I rented three vans (all pre-paid reservations) in Denver airport. York Car Rental had no cars whatsoever available when we arrived and even refused to send the shuttle to pick us up at the Airport. (leaving us stranding with a baby and kids). And to top that, here it is day 15 and we still have not received our refunds. I have called Priceline 3 times only to be told that they didn't get a response from their email and they will have to send another email. Really - day 15? And this is the response.
Do not use PRICELINE.COM or YORK CAR RENTALS.They have a bad business practice in handling refunds.