When someone asks about having something made, the first and MOST important question is ... how many do you want? The answer drives the degree of capitalization required for the job. Want one, very low capital investment and perhaps lots of labor. If you want 10,000 the capital investment could be substantial, labor for actual production nearly zero.
As for your 24 pt socket, need only one? no expensive broach needed, the job can be done on a shaper, tooling cost about zero.
Joe B