The output pricing system is best kept decentralized
But nothing suggests it can't be interconnected by a mark up warrant exchange
Yes viable sustainable average mark ups vary from industry to industry
But at the margin they can be tagged with a tax or subsidy to reflect system wide conditions
It's really that simple
Of course we'd best start with a sector like health
Where obvious social control would have immediate and substantial benefits
Always of course
With the clear objective
of expanding the range of the exchange step by step
to commodities and industrial imports and exports and then to the rest of the economy