1 Establishing a Framework For Analyzing Market Power in Electronic Commerce: An Empirical Study 1 Alok Chaturvedi and Subhajyoti Bandyopadhyay {alok, s_bandyopadhyay}@mgmt.purdue.edu Purdue University 1 The authors wish to thank Professor Janet Netz of the Economics department at Purdue University and four anonymous referees for their several comments and suggestions on earlier versions of the paper. Subhajyoti also wishes to thank Sujoy Chakraborty of Purdue University for some of his ideas.