In many strip malls, next to the dollar store, you’ll find another kind of shop targeting the same demographic. In this case, the customer is the one doing the selling, and the merchant is out for blood. The NYT’s Zoe Greenberg on American blood money: What Is the Blood of a Poor Person Worth? “Many developed countries have banned paying people for their blood, but not the United States. Blood products made up 1.9 percent of all American exports in 2016, more than soybeans, more than computers.”