Increasingly, marketers and policy makers are interested in estimating the average treatment effect on the treated (ATT) in settings where a randomized experiment is infeasible. Furthermore, in marketing and policy contexts, the data are often non-stationary and the precise structure of...

It has been hypothesized that the Internet lowers search costs and that electronic markets are more competitive than conventional markets. As a result, price dispersion (defined as the distribution of prices of an item with the same measured characteristics across sellers) is expected to be...

In this paper, we first develop a game theoretic model of price competition between a pure play e-tailer and a bricks-and-clicks e-tailer. We show that in general, the pure play e-tailer has a lower equilibrium price. We then develop a simultaneous equation model of e-tailer price and traffic...

It has been hypothesized that the online medium and the Internet lower search costs and that electronic markets are more competitive than conventional markets. This suggests that price dispersion - the distribution of prices of an item indicated by measures such as range and standard deviation -...

Frictionless e-commerce implies that price dispersion for identical products sold by different e-tailers should be smaller than it is offline, but some recent empirical evidence reveals the opposite. A study by Smith et al. (2000) suggests that such a phenomenon may be due to heterogeneity among...

Despite claims that electronic commerce lowers search costs dramatically, and therefore makes it easy for consumers to spot the best buy, empirical studies have found a substantial degree of price dispersion in electronic markets for consumer goods. This study investigates the consumer welfare...