A new Postal Service video explains the price changes that took effect Jan. 21.
The changes raised Mailing Services product prices approximately 1.9 percent, while most Shipping Services product prices increased an average of 3.9 percent.
USPS released the 1-minute video this week.
The Retail and Customer Service Operations Blue page has a 2018 price change kit for Postmasters. The Postal Explorer site also has a list of the new prices.