Good advice. Some markets do value lightness such as Video Cameras. There, you can sell the Carbon Fibre model for a premium because its lighter. I do wonder if you had a heavy version and a light version with the light version being priced higher, would it work?
...so at one point, when it no longer is economically viable to produce two different housings, you'll paint over the carbon and glue in lead weights for the cheaper version...
