PRODUCT QUALITY AND DISTRIBUTION CHANNELS

We introduce strategic behaviour in assigning a certain distribution channel to a product of a particular quality. We propose a variety of models to analyze and study some of the determinants of the choice of distribution channels. Taking the Gabszewicz and Thisse's (1979) model as a benchmark, we first study whether there exist strategic incentives for delegation of sales in a vertically differentiated duopoly. Secondly, product quality is associated with a particular distribution channel. Finally, the model is extended to account for multi-quality production. The resulting equilibria of every game depend on the relative market profitability, the degree of vertical differentiation (i.e. the relative marginal utility of income for quality and the non-buying option), and hence on the intensity of inter-quality and intra-quality competition. In all of the games analyzed, delegation appears as an equilibrium action. In the first game it is a dominant action for both manufacturers. In the second game, at least one of the manufacturers delegates sales. Whether it is one or both crucially depends on market profitability for each quality and the intensity of inter-quality competition. In the third of the games, the single-product manufacturer delegates sales at equilibrium whereas the multi-product manufacturer delegates only one of the qualities. The multi-product manufacturer employs wholesale prices together with the decision of not delegating both qualities to optimally combine the trade-off between the intensity of intra-quality competition and intra-firm competition.vertical differentiation, distribution channels, multi-quality production.

Innovation, Income Distribution, and Product Variety

On the basis of a modification of K. Lancaster's characteristics approach and a special class of non-homothetic utility functions individual demand functions are derived. Individual demand is determined in a complex way by the income as well as the product qualities and the unit costs of the offered products. It becomes clear that product innovations (changes in product quality), process innovations (changes of unit costs) and changes in personal income distribution (e. g. due to income taxation and redistribution) all influence product variety in a very different way.innovation, income distribution, product variety, Lancaster's characteristics approach

A statistical distribution useful in product life-cycle modeling

Starting from some recent results presented by Isaic â Maniu and Vodă (2008) regarding the Product Life â Cycle (PLC), we propose here an alternative statistical distribution in order to describe all four phases of a product life span. This distribution is the so-called ALPHA distribution which was formerly used in reliability theory as time-to-failure distribution.PLC (Product Life-Cycle), life span, statistical modeling, Alpha distribution.

Networks of Manufacturers and Retailers

We study the endogenous formation of networks between manufacturers of differentiated goods and multi-product retailers who interact in a successive duopoly. Joint consent is needed to establish and/or maintain a costly link between a manufacturer and a retailer. We find that only three distribution networks are stable for particular values of the degree of product differentiation and link costs : (i) the non-exclusive distribtion & non-exclusive dealing network in which both retailers distribute both products is stable for intermediate degree of product differentiation and small link costs; (ii) the exclusive distribution & exclusive dealing network in which each retailer distributes a different product is stable for low degrees of product differentiation; (iii) the mixed distribution network in which one retailer distributes both products while the other retailer sells only one is stable for high degrees of product differentiation and large link costs. We show that the distribution networks that maximize social welfare are not necessarily stable. Thus, a conflict between stability and social welfare is likely to occur, even more if the degree of product differentiation is either low or high.Networks; Retailers; Manufacturers