Sorry, I forgot to say! The letters will be coming to Japan, from America. So I need the cost of the postage in US$. As for the weight I am not expecting a lot, hopefully just a signed head shot, so less than 500 grams.

Hello, I am an ESL teacher living abroad. I am doing a project with my English club where we are writing fan letters. I am working on the S.A.S.E. but I am having some trouble figuring out the postage. If I were to send a return envelope that is a standard A4/printer sheet/8x11 size envelope, how mu...