The lenses are manufactured per individual according to their need. Granted it's within a spectrum of choices such as it's -1.5 or -2, not -1.66421 (right?). Then one can add features to the lenses like anti-glare, anti-scratch, spectrum, blue light filter. Insurance covers 100%, and it's not a lot. But the frames?? They're very, very small amounts of metal and mass produced. What a sham. But yeah I do buy them at Lens Crafters after my optometrist appointment for the convenience.