There is an underground organ trade in China, which reminds me very much of the concept of organlegging as used in the Larry Niven "Known Space" universe. At the same time, in what used to be a "legal" use of organs, China has been using the organs of executed prisoners. No more, they say.
At a meeting of the World Medical Association in Copenhagen, Chinese Medical Association officials agreed that they would no longer "harvest" organs from inmates to use in transplantation, except into the prisoners' immediate families.
What's interesting is that as many as 40% of the black market organs mentioned above go to foreigners desperate for a transplant. Although China has agreed to this, the concept of reducing prison terms in exchange for bone marrow or kidney donations has even been proposed in the U.S. Could we one day see a dystopian society much like Niven envisioned, where something like repeated speeding offenses are a capital crime requiring organ donation (The Jigsaw Man)?