How Much Postage For A Letter. Square, oversized, or unusually shaped envelope stamps start at $0.70. Postal rates are uniform between all 50 states, so there is no additional cost to ship items to or from the mainland with usps.
The next additional ounce adds 99 cents to the cost. Square, oversized, or unusually shaped envelope stamps start at $0.70. 90 mm x 140 mm
However, prices for envelopes heavier than 1 oz, oversized, or unusually shaped is based on the destination country’s price group.
30 g, 50 g air mail: The postal service can change the price of postage at any time, and most people do not send letters or packages every day to remember what the going rate is, or what the price would be for a. The most common question is 'how much does a stamp cost?', because no one wants to put the wrong amount of postage on a letter and have it get rejected. Check prices from royal mail and parcelforce worldwide for sending parcels and letters in the uk and abroad.