I would suggest you buy a booklet of the 42cent stamps.
It depends on where you live as to how much postage you put on your envelope. But it doesn't matter whether you have 42cent stamps or 80cent stamps as long as you have enough for it to be sent back to you.

Larisie

Hello everyone :D

I need to buy US Stamps or IRC's to send more letters and be able to get an answer.

I found this site in one of your topics: http://shop.usps.com/webapp/wcs/stores/servlet/CategoryDisplay?langId=-1&storeId=10001&catalogId=10152&top=Y&categoryId=11826&parent_category_rn=&top_category=11820

But I don't know which ones to buy, or how many for a size A4 envelope.

A friend of my father brought us these stamps, when he went to the United States:
[img]http://img520.imageshack.us/img520/7264/seloshn9.jpg[/img]

I only have these four, and I don't know what are the equivalents now.
I would appreciate your help very much, thank you*