Actually the article is pretty reliable, it's from a Brazilian newspaper that interviewed Jon this week.
He said that he didn't know the prices here were so expensive here (probably the main reason why the Rio concert is selling really bad), even in dollars. The price is R$600 (+ R$120 of convenience taxes) that means something like $420 dollars.
original source:
http://www1.folha.uol.com.br/ilustra...sileiros.shtml