All expenditures of federal funds must be fully delineated in the Federal Register and/or Congressional Review.
Taxpayers should ask their congressmen to supply them w/ copies of these public documents.
I realize that there is a fixed cost for the “program model” he uses and likely some sort of licensing fee. However, some of these contracts have “consulting” components which usually involve estimates of time needed.
I find it difficult to believe he can have that much available time. There are only about 1900-2000 work hours per year in normal situations. If you couple that with the amount of time he has to spend as an MIT professor doing something, where did he have the time to apply to all these contracts?