sme wrote:
... supplying this kit at a price we would all be willing to part with
for such a device. ...

Steve, you might want to consider offering a kit that protects your
intellectual property, but minimizes the cost for the hobbiest who can
do fabrication. I'm thinking of a kit that would include a finished PCB
and plans to build the hardware. The PCB is the part with the highest
value-added and producing just it would minimize the production
facilities that you would need.

My $.02,
Bob