FWIW most of that money is spent on lab equipment, much of which he owns now. A lot of it is also spent on getting statistical data and having doctors and scientists review it. He said he actually spends between $10K and $20K on the actual process of being younger. Watched several of his long form podcast interviews. His interview on Bill Maher is decent. [1]

Truth be told I am loving my multi-decade mid-life crisis. I feel great. Ignore the haters and skeptics.

[1] - https://www.youtube.com/watch?v=C6AzBN3Z_F8 [video][1h 50m]