There's a difference between "expensive" and "costly," Hermès's artistic director says.Edward Berthelot/Getty ImagesLuxury brand Hermès is best known for its handbags, which can start at around $10,000.Its artistic director, Pierre-Alexis Dumas, said they were not "expensive," but "costly."Expensive is "a product which is not delivering what's supposed to deliver," he told "60 Minutes."Would you call a $10,000 bag expensive?