The reason eye glasses cost so much is the multiple monopolies of Luxottica. Luxottica owns: (1) nearly all brand name frames including Ray-Ban, Oakley, Prada eyewear, Armani eyewear and so on, (2) nearly all retail stores such as LensCrafters, Pearle Vision, Sears Optical and Target Optical and (3) EyeMed, one of the largest vision insurance companies.

Luxottica retail brands: http://www.luxottica.com/en/retail-brands

Luxottica eyewear brands: http://www.luxottica.com/en/eyewear-brands

Luxottica vision insurance: http://www.luxottica.com/en/node/6336

See 60 Minutes story on Luxottica: https://www.youtube.com/watch?v=gDdq2rIqAlM