In models of product differentiation and location models it is implicitly assumed that consumers can afford to buy the differentiated goods in the market. I show that with income heterogeneity there are severe existence problems of a price equilibrium in models of horizontal product...

This paper estimates a general stochastic process for labor income via indirect inference, by jointly using labor income data together with the information embedded in the dynamics of individual consumption. We extend earlier work in several directions. First, we do not restrict income shocks to...