We analyze price dispersion using panel data from a large price comparison site. We use past pricing behavior to … greater price adjustment costs result in greater price dispersion. Although the impact of price adjustment costs on price … dispersion became weaker over time, the causal effect of price adjustment costs on price dispersion is still present at the end …

We study how mandatory online disclosure of supermarket prices affects prices and price dispersion in brick … in price dispersion and a 4% to 5% drop in prices following the transparency regulation. The price drop varied across …, we show that prices declined as more consumers used price-comparison websites, and we highlight the role of media …

markets. Channels sell quantities of airtime to advertisers, theunit price of which is determined by the number of viewers …

-based measures using the number of competitors in specific geographic radii are outperformed by price-based measures using prices of … competitors. The measure captures the decaying pattern of spatial price competition over distance. The measure also stands out in … capturing het-erogeneous spatial price competition effects. We find that spatial price competition is more intense among high …

We study the effects of horizontal mergers when firms compete on quality and price. Two key factors are identified: (i …) the magnitude of variable quality costs, and (ii) the relative magnitudes of cross-quality and cross-price effects on … demand. The merging firms will increase (reduce) both quality and price if the degree of competition is sufficiently stronger …

quality is robust to any given number of firms in the market and whether quality and price decisions are simultaneous or …