A little while a go I was looking into options of a pre-pay no-contract way of getting online in Brazil and found that it was working out to be pretty expensive. A pre-pay modem / satellite internet install in the home was working out quite a bit of dosh just to set up, plus the pre-pay cost of the internet was working out a lot.
Before I left Argentina for Brazil, I was in a similar situation looking for a cheap and pre-pay internet option, but found nothing. Well, upon my return a two weeks ago I was in for a happy surprise!