Title
Crowd-assisted search for price discrimination in e-commerce: first results
Abstract
After years of speculation, price discrimination in e-commerce driven by the personal information that users leave (involuntarily) online, has started attracting the attention of privacy researchers, regulators, and the press. In our previous work we demonstrated instances of products whose prices varied online depending on the location and the characteristics of prospective online buyers. In an effort to scale up our study we have turned to crowd-sourcing. Using a browser extension we have collected the prices obtained by an initial set of 340 test users as they surf the web for products of their interest. This initial dataset has permitted us to identify a set of online stores where price variation is more pronounced. We have focused on this subset, and performed a systematic crawl of their products and logged the prices obtained from different vantage points and browser configurations. By analyzing this dataset we see that there exist several retailers that return prices for the same product that vary by 10%-30% whereas there also exist isolated cases that may vary up to a multiplicative factor, e.g., x2. To the best of our efforts we could not attribute the observed price gaps to currency, shipping, or taxation differences.
Year
DOI
Venue
2013
10.1145/2535372.2535415
conference on emerging network experiment and technology
Keywords
DocType
Volume
price variation,return price,browser extension,initial set,initial dataset,online store,price discrimination,prospective online buyer,browser configuration,crowd-assisted search,observed price gap,privacy,economics,measurement,e commerce
Conference
abs/1307.4531
Citations 
PageRank 
References 
25
1.27
1
Authors
4
Name
Order
Citations
PageRank
Jakub Mikians1906.79
László Gyarmati219915.51
Vijay Erramilli357632.13
Nikolaos Laoutaris4144890.65