She said usually there will be a couple of days during the week when things are a little slower. Starting Sunday, it will cost 34 cents for a first class postage stamp. Additional ounces have actually gone down a penny. Extra ounces used to cost 22 cents. After 13 ounces, it becomes priority mail.
Priority mail reduces delivery time by one day.
But not all prices at the post office are increasing. Liddell said it will still only cost 20 cents to mail a postcard. A stamped postcard from the post office costs 22 cents. Post office boxes are cheaper now, too. Postal employees won't have to do too much to change over to the new, more expensive postage stamps.