Has anyone played with the Newton, Miller and Smith (1993) extension of
the van Westendorp model where they add two purchase probability questions
(BARGAIN and EXPENSIVE price points) in order to model maximum trial and
maximum revenue points.
I found a reference here:
http://www.sawtoothsoftware.com/download/techpap/2001Proceedings.pdf (page
113-114 or page 117-118 depending on which page numbers you use)
Before I try to figure out how to calculate the trial curve i wondered if
there is any additional documentation anywhere or if someone's already
written some code snippets, etc.
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