The postage rates for Marketing Mail, Periodicals, and other products will increase on January 26, 2020. Catalogs and direct mail postcards are typically mailed in the Marketing Mail class.
Below is a PDF that summarizes the key changes to the USPS rates among the various mail classes.
There are 5 pages in USPS document. Mouse over the text in the blue banner at the bottom of the first page to display the other pages.2019_12_18_Jan-2020-Price-Change-Factsheet-v18