Cost is commensurate with raw materials costs combined with the time and financial investment in research and development of the product. R&D costs are probably more that you can imagine so they set their pricing to recoup their investment in a reasonable amount of time. I'd be curious how many shafts Predator had to sell to break even and make a profit. The shafts continue to sell at the current pricing so why would they decrease the pricing (cheapen) once the project is profitable. That makes no sense and is counterproductive to the purpose of being in business: To make money (profit). Smart companies reinvest their profits into R&D of new projects and the cycles starts over again.
Could you make a CF shaft for less than buying? Maybe. But remember, you are piggybacking on the company's (Predator's, Cuetec;s, etc.) investment in R&D to ensure your product functions similarly so you never realize those costs.
Could you make a CF shaft for less than buying? Maybe. But remember, you are piggybacking on the company's (Predator's, Cuetec;s, etc.) investment in R&D to ensure your product functions similarly so you never realize those costs.