I'm not sure it is "just" that. You are paying for the reputation. He has a proven track record of being incredibly effective. That is worth a lot. There are ce

I'm not sure it is "just" that. You are paying for the reputation. He has a proven track record of being incredibly effective. That is worth a lot. There are certainly people who can do similar or better work but how do you know who they are? Plus one false-positive here has astronomical impact. Not only but that reputation means that he can fetch huge compensation at competitors, so you need to pay to cover that as well.