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

By the time you buy the right envelope and add insurance, you may be better off going with a USPS Priority Mail Flat Rate Envelope, which costs $10.45. The postal service will provide a free ...

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 ...

These hikes were approved by the USPS Board of Governors in November of 2024. Priority Mail rates are up 3.2%. With rates stating at $10.10 for Flat Rate Envelopes, $10.65, for USPS Flat Rate ...