"The empirical literature in international finance has produced three key results about international price deviations: borders give rise to flagrant violations of the law of one price, distance matters enormously for understanding these deviations, and most papers find that convergence rates...

Over the last three decades, trade has more than tripled the variety of international goods available to U.S. consumers. Although an increased choice of goods clearly enhances consumer well-being, standard national measures of welfare and prices do not assign a value to variety growth. This...