You really need to follow Dr. Keith Smith - he has been writing about this topic for a long time. There is actually quite an interesting movement towards price

You really need to follow Dr. Keith Smith - he has been writing about this topic for a long time. There is actually quite an interesting movement towards price transparency gaining traction in recent months, checkout for instance http://www.pricepain.com/why http://www.pricepain.com/why with a detailed reference list to articles/discussion on this topic from recent months