3.9 percent for USPS Ground Advantage and a larger 9.2 percent for Parcel Select. The price of a Priority Mail flat rate ...

The boxes are provided by USPS for free, and if your shipment is going to Zones 1-4, you'll find that this option is usually less expensive than Flat Rate Boxes. Priority Mail Medium Flat Rate Box ...

Designed by USPS art director Greg Breeding ... matching the price of the Priority Mail Flat-Rate Envelope. The Star Cluster Priority Mail Express stamp features IC 348, a star cluster located ...