The hardware may cost very modestly. But consider the salary of the people who designed it, built it, transported it, and installed it. These must be several pr

The hardware may cost very modestly. But consider the salary of the people who designed it, built it, transported it, and installed it. These must be several pros, working on that full-time, at a salary near the competitive level (even if they agree to take a hit out of being charitable). Much of that salary would go to the taxes.