In this paper, we tackle the dilemma of pruning versus proliferation in a vertically differentiated oligopoly under the assumption that some firms collude and control both the range of variants for sale and their corresponding prices, likewise a multiproduct firm. We analyse whether pruning...

Existing literature that argues for the prevalence of price premiums is examined. An evaluation of an extant model identifies several possible boundary conditions that limit its applicability. A set of propositions is developed based on these boundary conditions, linking buyer, seller and market...

The effect of labour costs on industry profits, employment and labour income is at the heart of the current European debate on industry competitiveness. High wages paid in European countries such as Germany are generally considered harmful for industry profitability. Though, high wages appear...

This paper develops a fully-endogenous, variety-expansion growth model with firm-specific quality heterogeneity, limit pricing, and an endogenous distribution of markups. Trade induces only firms with high-quality products to export, whereas firms with low-quality products serve only the...

We present a simple general-equilibrium model where one industry is oligopolistic and vertically differentiated. The manufacturing of products of a higher quality requires the employment of a larger amount of skilled labour. Given an underlying skills distribution, the model determines profits,...

We investigate theoretically and empirically how exporters adjust their markups across destinations depending on bilateral distance, tariffs, and the quality of their exports. Under the assumption that trade costs are both ad valorem and per unit, our model predicts that markups rise with...

The unsatisfactory performance of Italian export volumes in the last decade has been attributed to three factors: the product specialization still centered around traditional sectors, the small firm size and the exceptional rise in export unit values. This paper analyzes the latter with the aim...