Abstract:This paper investigates oil refiners' conduct in the Korean gasoline market. Specifically, I examine which of two modes of conduct, Bertrand-Nash competition or collusion, better fits the data. Unlike previous literature, this paper employs a differentiated product approach to address the stylized discrepancy in refiners' brands' prices: stable stratification of prices among refiners, but an unlikely equilibrium outcome in the homogenous goods market. Correct understanding of refiners' conduct is important bec… Show more
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