We consider an oligopolistic market where firms compete in price and quality and where consumers are heterogeneous in …-inefficiency of the price/quality offers. But, better price/quality combinations are signalled with lower prices in one type and with …

This paper studies asymmetric price responses of individual firms, via daily retail prices of almost all gasoline … the stations respond asymmetrically to changes in the spot market price. Hence, asymmetric pricing is not a feature of the …

in the daily retail price for gasoline (taxes excluded) for the period 1996-2004 taking care of volatility clustering by … estimating an EGARCH model. It turns out the volatility process is asymmetrical: an unexpected increase in the producer price has … a larger effect on the variance of the producer price than an unexpected decrease. We do not find strong evidence for …

prices. There are three distinct price dispersed equilibria characterized by low, moderate and high search intensity … intensity, increased competition does not affect expected price, leads to greater price dispersion and welfare declines. In … yields identical expected price and price dispersion but higher welfare than an infinite number of firms. …