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 Bi…

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 “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 us…