Unpublished items for “Confessions of an Internet Monopolist: Demand Estimation for a Versioned Information Good,” with Paolo Guimarães and Orgul Ozturk Managerial and Decision Economics, August 2010.

Erratum: Table 1 in the text of the paper has several incorrect entries. This Spreadsheet contains the correct data. 

Programs and Data: Main programs and data files, and also a readme file, are contained in this Zipped File. 

Examples of Images Sold:

Image Sale Offer

Likelihood function plot (Estimation in Model 2, Table 3):

Countour plot

Grid Search (Estimation in Table 4):

Grid Search Spreadsheet