Our data sample comprises 2041 eBags.com transactions
involving 90 suppliers and occurring between 1
November and 30 November, 2003 (see Table 2 for details).
The month of November corresponds to the start of the
holiday shopping season (see http://www.nielsen-netratings.
com/pr/pr_031209.pdf) and is part of the busiest
selling period of the year for retailers