I think I am being a bit thick
Let me just clarify. The new price now falls in line with the price in other countries but that is a huge problem because the average disposable income in Brazil is much lower?

But that is how exchange rates work isn't it? They look at a countries average income, levels of unemployment, cost of living, GDP and many many other economic factors and say OK my 1 USD is the relative value of your 3.15 BRL.

So while I appreciate that an anoucement would have been courteous if not required by the ToS I must be missing something if this has suddenly become totally unaffordable when the relative value in real terms is now the same as in every other country