London CNN  —  More than ever, high-end brands want you to know exactly how, and where, their goods are made. They are producing enormous glossy coffee table books showing white-coated workers hand-stitching products in glamorous workshops, and creating marketing campaigns emphasizing the exquisite materials and dedicated handiwork that go into the making of their very, very expensive products. These companies are trying to explain the value of their creations to consumers because their profits