The document provides a comparison chart of USPS rate changes effective January 26, 2020. Key details include: - Rates for First-Class Mail letters and postcards under 13 ounces did not increase. Rates for flats saw increases between 1-21%. - Commercial and retail rates for Priority Mail, Priority Mail Express, and Package Service saw average increases between 3-10% depending on weight. - Marketing Mail and Periodicals rates increased 1-2% on average for letters and flats between 1-10 pounds.