3x more expensive (0.44B vs 1.2B) for NASA to do it. Slide #3 states NASA did not perform a detailed analysis of the estimates, but NASA concluded the number of employees, layers of management, and infrastructure were the key differences. And slide 6 almost sounds like NASA is saying "NASA shouldn't do this." Makes sense. They should use their budget and more comprehensiive oversight for zanier stuff, IMHO. Speaking of oversight, I also doubt SpaceX will be grilled anywhere near as severely as NASA when a death does occur, Elon has been upfront that this is risky stuff.