Musk had identified five major drivers of launch vehicle costs and had set about bringing each one of those down. The first, and perhaps the biggest, was overhead. Looking around the Main Building I could see for myself that Musk ran a tight ship. He had fewer than a hundred employees, including all the engineers, machinists and associated support staff like the receptionists, administrative assistants, and a public relations officer."We are an extremely low-overhead company," said Musk. "If we simply handed our blueprints to a Boeing or Lockheed, I think the price would at least double if not more."
"There was the rocket itself, with three major components contributing to its cost: engines, structures (the actual body of the rocket as well as fuel and oxidizer tanks), and avionics - the sophisticated computers and software that controlled the other components to guide the rocket through the air to space and into orbit.
"And then there was the launch operation. Musk laughed as he told me how a Lockheed Martin representative boasted to him of his company's "lean" launch crew: only three hundred people. "Now what are those people doing? I can't tell you." Falcon 1's launch crew? Twelve to fifteen people sitting in a custom-made trailer at the launch site."