Postage Rates 2024 Per Ounce. Effective september 16, 2024, usps will adjust rates for priority mail ® and ground advantage ™ packages shipped to certain zip codes. Postal service filed notice with the postal regulatory commission of mailing services price changes to take effect july 14,.
Usps sends mail to over 180 countries, including canada and australia. Business reply permit fee (handling charges per article) 1.00.