There's probably two reasons for the high cost and popularity of CK products. First, is the bling factor. People want pretty stuff, and CK stuff is pretty (Hmmmm, same initials as Calvin Klein). That creates a demand which results in higher prices. The other, and no less important, is the quality control of CK products. They have tight QC and their tolerances in manufacturing are probably, by far, much tighter than a lot of other manufacturers. Another reason behind high price might also be that they can't mass produce as cheaply as some of the other companies (size of company, capital, overhead, workforce, etc).