This paper considers identification and estimation of a general model for online price competition. We show that when the number of competing firms is unknown, the underlying parameters of the model can still be identified and estimated employing recently developed results on measurement errors....

Evolution of the market for air-travel information / Michael Doane, Kenneth Hendricks, R. Preston McAfee -- Online price dispersion within and between seven European countries / J. Rupert, J. Gatti, Paul Kattuman -- Price dispersion, product characteristics, and firms behaviors : stylized facts...

Clearinghouse models of online pricing - such as Varian (1980), Rosenthal (1980), Narasimhan (1988), and Baye-Morgan (2001) - view a price comparison site as an "information clearing-house" where shoppers and loyals obtain price and product information to make online purchases. These models...