may be best sent using the USPS Priority Mail Small Flat Rate Box for $11.00. This box is approximately 8 inches long by 5 inches wide by 1 inch deep and comes with free tracking, insurance up to ...

3.9 percent for USPS Ground Advantage and a larger 9.2 percent for Parcel Select. The price of a Priority Mail flat rate envelope (size 12-1/2″ x 9-1/2″) will jump from $10.45 to $10.78 while ...

With rates stating at $10.10 for Flat Rate Envelopes, $10.65, for USPS Flat Rate Mailing Box, and $9.35 when using ... Policies in 2025 Plan a stress-free flight with your pet in 2025.