what is does a us stamp cost for a letter
Letters destined for Canada and Mexico-for the (1) ounce first class letter cost $1.20 as of May 31st, 2015 that was a 5 cent hike from $1.15 effective January 26 `014 with the global forever stamp (then applying to all international destinations forward).ny extra ounce(s) are subject to a fee of $0.22 per added ounce as of May 31st, 2015 (previously $0.21 per oz). Another prior rise in rates occurred January 27, 2013 when the price of a first class letter sent through the United States Post Office went up $0.01 to $0.46.