Mitchell suggests that the concept of “dignity” won’t do us a lot of good if we want to resist commodification of our bodies and their parts. But this begs a prior question: should we resist commodification of our bodies? Is it a good or a bad thing to be able to sell our bodies and/or their parts? It seems likely that your answer is “well, it depends.” On what does it depend – and how could be come up with a coherent explanation? Presumably, the limit cases are that we shouldn’t allow you to sell yourself into slavery (though some people do defend the permissibility of that), and selling something like plasma (that isn’t important to who you are, and that you’ll make more of). If that’s right, where do we draw lines? For example, what about cases like organ transplantation – should you be able to sell a kidney?