I do not believe the magnetics can be 3D printed at this time, but I may be wrong. The costs involve design and prototype costs, then preparation of detailed specs, then proof pieces produced to those specs for testing, then 100 sets of magnetics (and their associated power board) to produce the first run of 100 units. There are also some other non electronic parts that must be obtained, but since I have already bought several dozen (at least) of each of them, I simply need to negotiate a price for more and order them (they are made in the USA).
I still wonder why 100 and not 1? Do you actually recoup the $65K investment through the 100 units?