Curious about why people think the way they do? Curious about learning how to tailor your business offerings and pricing so that everyone is more likely to experience a win-win outcome? Let me recommend Dan Ariely's Predictably Irrational as a place to begin.
Ariely, Professor of Behavioral Economics at MIT has done hundreds of simple but insightful experiments which identify quirks and blind spots in the way human beings perceive economic outcomes.
This book won't teach you specifically how to rework a General Price List, but for those of you constantly looking for a better way to explain and organize your offerings, Ariely's insights might make a difference. Chapter 1 alone, which shows the impact of packaging in the magazine business, is worth the price of the book.
Check it out.