Competition and Price Discrimination in International Transportation

Abstract

This paper documents price discrimination by transport companies, revealing their market power. Larger shipments of similar products sharing a container receive lower prices. A trade model with non-linear pricing of transportation rationalizes this with economies of scale and price discrimination, highlighting their distinct policy implications. To distinguish them, I test for the effect of competition on freight price variation specific to price discrimination. Using unexpected water level changes to instrument for competition in river transportation, I find increased competition causes steeper discounts for larger shipments. Thus, market power in transportation is less distortionary for larger firms gaining additional cost advantages.