This chapter discusses the incomplete commodification of human body parts in American law. In the main, American law bars payments for human body parts and tissue to be used in clinical care. However, this prohibition on payments does not reach all human body products. Rather, federal law sets out an explicit list of covered organs, and courts have interpreted that list strictly. Despite strong demand for body products and the traditional American preference for markets in general, myriad body products are procured in partial, though incomplete, markets. On one hand, when market mechanisms are putatively prohibited, markets have nonetheless crept in at some—but not all—stages of the process of transferring tissue from the donor to the recipient. On the other hand, when markets are not prohibited, they nonetheless do not develop fully. The chapter explores this juxtaposition of law and norms in the American setting. It also suggests one reason for the incomplete commodification of body products such as sperm, eggs, and blood: a preoccupation and discomfort with the role of women in markets rather than at home. That is, when it comes to body products, women are deemed to participate primarily for reasons of love, not money.