Delivering the Goods 21st CENTURY CHALLENGES TO URBAN GOODS TRANSPORT

The complementary in shopping does not eliminate the possibility to discriminate the shoppers and the captives when the two goods are complements. Rather, it gives an additional ability to do such discrimination without lowering prices too much as the shoppers have a stronger incentive to shop at one place. We were unable to solve our model when these costs are present as this task requires nding the marginal distributions as well as the distribution of the sum of the two prices. It is our opinion that solving the model presented in this paper with an additional cost t incurred by the shoppers when they buy the two...