Here on Brasil we have 5 differnt foreigner taxes:
Group 1 - Mercosur contries - R$ 3,05
Group 2 - Other South American countries - R$ 3,15
Group 3 - Central and North America - R$ 3,50
Group 4 - Europe - R$ 4,20
Group 5 - Africa, Asia and Oceania - R$ 4,45
If the letter goes with registration, plus R$ 8,90 to the value.