Until you convince those CAs to start signing for code, they still cost $400+. And remember, that's per year. The driver will continue to function after that ye

Until you convince those CAs to start signing for code, they still cost $400+. And remember, that's per year. The driver will continue to function after that year, but they will either need to cough up another $400 the next year, or cease development. Even at $100-200 per year that's still an unreasonable cost for hobby projects.