This paper analyzes the demand structure of passenger cars by es - timating expenditure and opportunity cost equations separate - ly under a censored regression model with latent floating censor - ing thresholds. An expensive durable good such as a passenger car is consumed at the expense of the foregone consumption of oth - er goods and services or saving. A consumer accepts a price offer of a car when the worth specified by the price stream exceeds the reservation threshold specified by the opportunity cost, and the price is realized as expenditure. The expenditure increases with net wealth and income, while the opportunity cost decreases with in - come; however it increases with squared income and the number of owned cars. This implies that even a very rich person (household) would not demand an additional car, despite additional income, be - cause the utility is already saturated and there are physical con - straints against further consumption. By simulations, the probabil - ity of purchasing a car is demonstrated. The analyzing method can be generalized and extended directly to the cases of other expensive durable goods.
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