Usps Priority Box Prices 2025. Prices start at $31.55 at a post office. Priority mail and priority mail express packaging supplies have been redesigned and are available at your post office ™ and online.

See forever postage stamp prices and other postage rates. The change would raise shipping services prices approximately 3.2 percent for priority mail service and priority mail express service, 3.9 percent for usps ground advantage and 9.2 percent for parcel select.