cost of us postage stamp book
By Patch Editor Judy Putnam. This week, the cost to mail a first-class single-piece letter jumped from 46 cents to 49 cents. The cost of a book of 20 stamps rose from $9.20 to $9.80.The U.S. Postal Service's 3-cent increase is the largest hike for consumer postage in more than a decade.The cost of mailing a post card will also go up to 34 cents, a 1-cent increase. More from Leesburg Patch.y Patch Editor Judy Putnam. This week, the cost to mail a first-class single-piece letter jumped from 46 cents to 49 cents. The cost of a book of 20 stamps rose from $9.20 to $9.80.