Yes, we do ship USPS Priority mail when possible. However, this is not yet available as an option during checkout. To select USPS as your preferred shipping method, choose UPS Ground shipping. In the comments section on your order, please let us know you would like us to ship via USPS. We will adjust the shipping charges when the order is processed. Please note that product dimensions, stock locations and product weight will determine if this option is feasible. To find out if your order is eligible, call us at 1-800-542-1979.