In many decentralised markets, the traders who benefit most from an exchange do not employ intermediaries even though they can easily afford them. For other traders, those who benefit little from trade, intermediaries are too expensive. Together, these observations lead to empirically observed...

In this paper we extend the standard matching analysis of decentralized markets allowing for the possibility that some traders are matched to more than one trader on the opposite side of the market. In contrast to the literature, we are able to reconcile the Walrasian equilibrium with the...