The neoclassical investment literature assumes that capital is homogenous, lives forever, and has a constant depreciation rate. More recent theories of investment have shown that when there are distinct capital vintages with embodied technologies, depreciation and capital retirement become...

This paper estimates the price sensitivity of individuals' choice of whether to buy computers online versus in retail stores using a new data source on the computer purchases of more than 20,000 people. The paper first fits hedonic regressions for the retail price of computers in a local area...

The rapid rise in sales over the Internet and the fact that most Internet buyers pay no sales tax has ignited a considerable debate over taxes and the Internet. This paper uses new data on the purchase decisions of approximately 25,000 online users to examine the effect of local sales taxes on...

With fixed costs of developing technology, taxes can generate large efficiency costs by slowing the rate of diffusion and these costs are not accounted for in conventional analyses. This paper illustrates the potential importance of this idea in the context of taxes on broadband Internet access...