You open your closet and see the business suit you purchased for that job interview. But you landed at a company that is purely business casual—and that suit will probably never be worn. At least not by you. There’s a healthy market for secondhand clothing in the United States that serves dual purposes. You, as the seller, can recoup some of your investment in an item of clothing or an accessory. The buyers, on the other hand, want to add quality, lightly-used garments to their wardrobes at a fraction of the retail price. A win-win....