Thanks for the answer.
Well 18 years is not "a few years" for me! A few years means 2-3 years in my worold. If we are talking 18 years ago, its more realistic, as there have been a lot of inflation and much more in 18 years
Anyway my wife is Brasilian, so I think the best option is to go there with her and talk to the locals. We prefare the area around fortaleza, but are open to other places.
Right now we are trying to find out if we schould buy now or wait a few years.
Again: where to find official pricestatistics? is it something that is just not in Brazil?