The USPS Store provides packaging at no cost for its premium services.
: These boxes must be used with the specific service printed on them (e.g., you cannot use a Priority Mail box for Ground Advantage). Common Types : can i buy shipping boxes at the post office
: Non-flat-rate boxes where the shipping price is based on weight and distance. 2. Paid Shipping Boxes (ReadyPost) The USPS Store provides packaging at no cost