Current conceptualizations of the commodification of management knowledge prioritize the agency of knowledge producers, such as consultancies, but downplay the role of other actors such as intermediaries. Using a qualitative multi-method study of the role of procurement in sourcing consultancy knowledge, we demonstrate how intermediaries also commodify management knowledge, thereby limiting the exchange value of that knowledge. Through our analysis we develop a more sophisticated model of the processes and consequences of knowledge commodification. This model clarifies and extends prior research by highlighting the role of commensuration, comparison and valuation, as well as the related tactics that consultants and client managers use to resist procurement's attempts to commodify management knowledge. © 2012 Blackwell Publishing Ltd and Society for the Advancement of Management Studies.