Is Living in Brasil expensive?

It depends in wich city you´ll live at. São Paulo, Rio de Janeiro, Belo Horizonte and many cities on the south are expensive to live, but nothing compared with the Europe.
Rent is a bit expensive in those cities, but you can live in a good apartment, 2 bed rooms with around US$400 including all the taxes. Food is not expensive.

cool. i just dreaming to go there.

Good luck! Brazil is much better than EU nations.