We examine the equilibrium interaction between a market for price information (controlled by a gatekeeper) and the homogenous product market it serves. The gatekeeper charges fees to firms that advertise prices on its Internet site and to consumers who access the list of advertised prices....

The impact of the internet on horizontal and vertical competition : market efficiency and value chain reconfiguration / Anita Elberse, Patrick Barwise, Kathy Hammond -- Trust among strangers in internet transactions : empirical analysis of eBay' s reputation system / Paul Resnick, Richard...

We examine the equilibrium interaction between a market for price information (controlled by a gatekeeper) and the homogenous product market it serves. The gatekeeper charges fees to firms that advertise prices on its Internet site and to consumers who access the list of advertised prices....

This paper examines four million daily price observations for more than 1,000 consumer electronics products on the price comparison site http://Shopper.com. We find little support for the notion that prices on the Internet are converging to the 'law of one price.' In addition, observed levels of...