If an FRE or FRB is presented at the office of mailing and the customer has manipulated or reconstructed it, the container is accepted using weight and zone - not the Flat Rate price.1 The weight restriction for domestic Flat Rate Envelopes and Boxes is 70 lbs. USPS Priority Mail Can I use a Flat Rate box but pay by weight?

What is the cheapest method to ship a package? Medium Flat Rate Boxes cost $12.35 when you purchase the postage at a USPS retail outlet, or $11.30 if you get the postage online.

How much does it cost to send priority mail flat rate medium box? Flat Rate Envelopes and Small Boxes have a distinct advantage when shipping shorter distances, Zones 1-4, and for parcels weighing less than 20 lbs. Is it cheaper to ship flat rate or by weight?įlat Rate packaging provides a better value than weight-based pricing if your products fit within the defined dimensions of the Flat Rate packages. Priority Mail cubic pricing is a more efficient USPS service for shipping small packages that weigh up to 20 pounds. One such option is taking advantage of cubic pricing. Is it cheaper to use a Flat Rate box or your own box USPS?Īs we mentioned above, combining your own custom packaging with the right USPS service is often more cost-effective than using flat-rate boxes.

Usps priority mail flat rate medium box