Priority Mail Medium Flat Rate Box rates are increasing by $0. From $55 to $13, $13 becomes $75. Twenty people are currently online. There will be a $1 increase in rates for the Large Flat Rate Box.
20 cents, up from 20 cents in 2020. Padded Flat Rate Envelope $8.75 Commercial Base $9.30 at Post Office & Online Legal Flat Rate Envelope $8.45 Commercial Base $9.00 at Post Office & Online Small ...