A human subject laboratory experiment compares the real-time market performance of the two most popular auction formats for online ad space, Vickrey-Clarke-Groves (VCG) and Generalized Second Price (GSP). Theoretical predictions made in papers by Varian (2007) and Edelman, et al. (2007) seem to...

Shill bidding is a fraudulent in-auction strategy where a seller participates as a bidder in his own auctions. This is the first paper on shill bidding that is based on a data set which includes personal details. Along with bidding histories, I can prove that on the investigated platform 0.3% of...

A human subject laboratory experiment compares the real-time market performance of the two most popular auction formats for online ad space, Vickrey- Clarke-Groves (VCG) and Generalized Second Price (GSP). Theoretical predictions made in papers by Varian (2007) and Edelman et al. (2007) seem to...

Along the standard measures of price dispersion, this paper proposes a new method, the residual variance model, to examine the levels of price and price variation within and across 10 kinds of physically identical products on eBay UK. The results find that the price levels and price dispersions...

This paper provides research into the effects of product class and seller reputation on price-setting in online auctions. Sellers may offer price information to potential bidders through buy-now prices (BNPs) and starting prices (SPs). In two experiments, the authors show that for products with...

Using online auction data, we address the endogeneity involved in estimating the eff ect of the number of bidders on the winning bid. We introduce a novel instrumental variable. Our results indicate that the bias arising from treating the number of bidders as exogenous, is substantial

Sellers in eBay are often small-business owners whose livelihood depends on fast turnaround of their cash flows. Unlike in traditional auctions, these sellers are content to sell as soon as some target price is reached. While a wealth of literature exists on the final rent of the various...

In this paper, we estimate the inefficiency in online auctions. Online auctions can be inefficient due to the Internet fraud. A typical example of Internet fraud is when sellers do not send goods to winning bidders even though they have received payment. Therefore, bidders always bear a risk of...

Using bid data from 8,000 new and used Chevrolet Corvettes sold on eBay, this paper empirically tests Akerlof's (1970) hypothesis that the used car market is characterized by low quality and informational problems. The hypothesis states that the used market has a higher proportion of low quality...

Online auctions have gained tremendous popularity in the last one decade. In order to make this mechanism more attractive to Muslims, online auctions can be conducted as per the norms of business transactions in Islam. This paper includes a discussion on these aspects. By incorporating the norms...