Once you start a complex procedure, many different things can happen, some very costly to respond to. So how does an organization price for that? Do you price in every emergency contingency? Do you shop for one regular heart bypass with or without emergency resuscitation in case of heart stoppage, or extra drugs needed to be pushed in for any of a number of different outcomes. Is there a fine for not adhering to the advertised price - does that create an incentive to avoid some measures independently of what would be good treatment?