I was just looking that up, too. In the US for domestic regular sized letters under one oz. is $0.42. I have a bunch of $0.03 stamps and would really like to find some $0.39 stamps so that I can use them up.
98 cents for ordinary mail
About 44 cents, last I recalled. You just need the current First class stamp on there. You can pick it up at your local Post Office or Bank.
that all depends from what country you are sending if t from
It depends on several things; The weight The destination The origin The type of transport The class it is sent
A first class letter weighing one ounce or less is delivered within the United States for 44 cents.