advocates of participism and parecon in particular reject markets in all forms in favour of democratic participatory planning while parecon also uses personal credit in place of money prices are set according to the direct requests of consumers in democratic "consumer councils" whose demands are relayed to economic facilitation boards who determine and set final prices based on a combination of marginal utility and opportunity cost on the other hand as fotopoulos argues "no kind of economic organisation based on planning alone however democratic and decentralized it is can secure real self-management and freedom of choice"