NEWSLETTER-2019-metin

122 NEWSLETTER 2019 ber of corporate memberships and income from corporate members was utilized. • Barriers to entry in the relevant markets are primarily net- working effects, and sunken costs arising from the networ- king effect. The networking effect is the determination of the value of the platform by the decision-making units that wish to take advantage of the commercial interaction opportuniti- es offered by the platform, and are influenced by each other’s preferences. Undertakings entering the market later on will have to allocate a serious advertising and promotional bud- get in order to overcome the entry barriers and to add value to their platforms. In this regards, multi-homing costs (i.e. costs of operating in multiple platforms) were also taken into account in this context. In addition, the importance of the value of the name of “Sahibinden” in consumer preferences and the wide range of services offered by Sahibinden.com are defined as barriers to entry to the market for existing and potential competitors. We observe that the Competition Board has also defined the networking effect in its previous decisions, such as Booking.com 2 . Excessive Pricing Assessment In the assessment of excessive pricing, the margins of prices, price increase rates, market share differences and the differences between prices and costs of Sahibinden.com and its competitors in the relevant markets were examined. As a result of the calculations, it was evaluated that Sahibinden. com implements prices that would not be observed in the competitive markets, and that the existing competitors in the relevant market did not create any competitive pressure that could affect this pricing behavior. In addition, the presence of entry barriers in the relevant markets also hinders any potential competitive pressure. Therefore, it is determined that neither of the two markets is capable of self-correction in the 2 Competition Board’s Booking.com decision, No. 17-01/12-4, 05.01.2017, https:// www.rekabet.gov.tr/Karar?kararId=d2bfb2c8-e517-498a-9542-07e3cad8a419 (Access date: 28.01.2019).