Despite the interest in measuring price sensitivity of online consumers, most academic work on Internet commerce is hindered by a lack of data on quantity. In this paper we use publicly available data on the sales ranks of about 20,000 books to derive quantity proxies at the two leading online...

The rapid rise in sales over the Internet has generated debate over the taxation of such transactions since the buyers usually pay no sales tax. This paper uses new data on the purchase decisions of approximately 25,000 online users to examine the effects that local sales taxes have on Internet...