The effect of competition on eBay

• Autores: Peter W. Newberry
• Localización: International journal of industrial organization, ISSN 0167-7187, Vol. 40, Nº. 1, 2015, págs. 107-118
• Idioma: inglés
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• Resumen

  • I examine the effect of competition on eBay Motors. I specify a simple model of auction choice and show that the expected transaction price falls with an increase in the number of competitors. I then test for this effect using data from 5,500 auctions for Chevrolet Corvettes. To address potential endogeneity of the level of competition, I introduce an instrument which takes advantage of the unique features of eBay. Results indicate that an additional competitor leads to a 6% reduction in the final transacted price ($960 for the average car). Further, I provide evidence that this effect is due to the thinning of the bidder market rather than dynamic bidding.