Where in the USA can you buy stamps to use in Brazil?

Answer 1

Stamps from all countries can be purchased from dealers. They can also be purchased from the government that issues them. Most postal entities have web sites and have special deals for collectors. Check the Brazilian Postal Service web site for their deals.

Answer 2

Most post offices in the US sell a little known article known as an International Postal Reply Coupon. The coupons are redeemable for stamps in countries that are members to the UPU covenant equal to the international first class rate for an article weighing 20 grams. At present, the coupons cost $2.10

Answer 3

{| |- | Brazil does issue postage stamps. It was a very early adapter of the adhesive stamps, following Great Britain. They actually issued stamps before the US started. |}