Due to the different views in economics the prohibition of excessive prices is among the most controversial subjects within EU competition law. This article aims to shed some light on this concept. In the following, it first identifies the exceptional circumstances that may justify antitrust...

Undertakings may restrict competition by cooperating with their competitors or by interfering with their ability to compete. In both cases, their ultimate goal is to raise the price they charge for their products or services. Therefore, the main concern about both collusive and exclusionary...

Preisalgorithmen sind aus dem heutigen Online-Handel nicht mehr wegzudenken. Die Nutzung von Preisalgorithmen wirft dabei grundlegende Fragen danach auf, wie wir Wettbewerb verstehen und schützen. Diese Arbeit analysiert die Auswirkungen der Nutzung von Preisalgorithmen in...

We consider the interaction between an incumbent firm and a potential entrant, and examine how this interaction is affected by demand fluctuations. Our model gives rise to procyclical entry, prices, and price-cost margins, although the average price in the market can be countercyclical if the...

We analyze dynamic price competition in a homogeneous goods duopoly, where consumers exchange information via word-of-mouth communication. A fraction of consumers, who do not learn any new information, remain locked-in at their previous supplier in each period. We analyze Markov perfect...