The noted philosopher Debra Satz takes a skeptical view of markets, pointing out that free markets are not always a force for good. She asks: What considerations ought to guide the debates about such markets? What is it about the nature of particular exchanges that concerns us to the point that some types of markets are problematic? How should our social policies respond to these more noxious markets? Satz’s original and long-anticipated expression of her views on this important topic will be of interest to philosophers, political scientists, economists, and scholars in law and public policy.