We use an augmented gravity model to revisit the effect of similarity in income distributions on bilateral trade flows. Disentangling supply-side and demand-side mechanisms, we document a robust new regularity: while differences in average incomes between two countries increase trade,...

In this paper, I explore the impact of per capita income and population size on markups and bilateral trade flows in a random search framework. The intuition is that, when a firm randomly meets a consumer, only that consumer's income matters to the firm's pricing strategy;the size of the...