Bill Williams is reporting for WCTW-FM, the Cat, the cost of first-class postage will increase nationwide on Sun., Jan. 21, by one cent, making the cost of a First-Class Mail Forever stamp now 50 cents. The price of postcard stamps and metered letters will also increase by a penny. The postage increase does not include any change for single-piece letters being mailed to international destinations or for additional ounces for letters. Domestic Priority Mail Flat Rate retail prices will also increase by five cents. The increases will raise mailing services product prices overall by 1.9 percent and most shipping services by 3.9 percent. Read the full announcement by the U.S. Postal Service at USPS [dot] com.