Shipping is always free at Prostamps. We ship all of our products using USPS first class package. First class package service offers fast, nationwide delivery in three days or less, closely matching the speed of Priority Mail. Deliveries can be shipped to any U.S. address, PO Box, and many APO/FPO/DPO destinations. USPS Tracking is included for free and will be provided to the email address on the order when your package ships.