How to buy points for South America flights?

Does anyone have any tips how to get to south America buying points atm? I am from Brazil and dying to get there but Qantas is not letting me get anything with points, any other idea I could do buying points elsewhere?

What is your points balance right now? We generally only recommend buying points if you are just short of the points required to redeem a flight. Otherwise, it often works out cheaper to just get a paid flight instead.