Comparative price information for major Ottawa supermarkets was collected over a twenty-eight-week period and published in daily newspapers during a five-week test period. In response to the information, the dispersion of prices across store and chains narrowed, the average level of prices of...

This paper examines the relationship of 1987 retail grocery prices to supermarket sales concentration across 95 U.S. metropolitan areas. The regression model incorporates a large number of population, retail-cost, and retail competition factors and separate prices by type of grocery item. We...