This paper considers a standard monetary economy with indivisible primary assets and transaction costs. When assets are indivisible, if a steady-state equilibrium with positive savings exists, there necessarily exists a very large set of equilibria. The intermediation of indivisible assets substantially reduces the set of competitive equilibria, and enhances the "flexibility" of prices. We state sufficient conditions for intermediaries to form and hold all primary assets directly. We define and analyze various measures of the consumer surplus created by intermediaries. We show that conventional measures of intermediary output bear no obvious relation to the consumer surplus created by intermediation. Journal of Economic Literature Classification Numbers: E40, G20.