Support WBUR'The Best Thing You Can Do Is Not Buy More Stuff,' Says 'Secondhand' ExpertPlay37:11Download AudioTerry GrossDecember 04, 2019 ShareAuthor Adam Minter estimates that the average U.S. thrift store is able to sell only about one-third of its inventory. In his new book, Secondhand, he finds out what happens to the other two-thirds. (Universal Images Group via Getty Images)