The Big Mac Index reads $3.57 for the USA. But they are one of those things that are constantly having sales. At my local major league baseball stadium (St Louis Cardinals, you probably wouldn't know though), there is a row of seats called Big Mac Land. If a home batter hits a home run into those stands, either everyone in the seats gets a free Big Mac or everyone in the stadium (~45,000-50,000 people average) gets one, forgot which way it goes.
