Danwei has an article describing two advertisements in Chinese newspapers and fliers.  One, from a self-described “healthy individual” offered to sell healthy organs to anyone “in need.”  The other offered to stalk a person, or inflict vengeance in the form of cutting off an arm or leg.

“We can cut hands, feet, or we can ‘do’ someone directly. But that’s the most expensive – it costs 50,000 yuan.”

Sounds like what the Mafia used to do for free in the US.