Pathological customers are disproportionately attracted to low price points. Your post jives with the experience of literally dozens of companies which have told me the same thing: the more you charge, the better your customer pool will be at everything. They'll read better. They'll have a better understanding of, ahem, engineering reality. They'll be more patient. They'll have less viruses and hard disk failures. They'll be better at using the Googles. etc, etc