The burger has become more expensive over time, but available records do not show it lost 40% of its size.

While fast food was once a cheap way to enjoy a meal, it has increasingly becoming an expensive treat instead. No where is this more true than with the Big Mac.

The “law of one price” holds that identical goods should trade for the same price in an efficient market. But how well does it actually hold internationally? The Economist magazine’s Big Mac Index ...