Confessions of a used-book salesman. - By Michael Savitz - Slate Magazine

Confessions of a used-book salesman. - By Michael Savitz - Slate Magazine: "I make a living buying and selling used books. I browse the racks of thrift stores and library book sales using an electronic bar-code scanner. I push the button, a red laser hops about, and an LCD screen lights up with the resale values."