I probably have close to $100 total invested in this machine.
The plywood was left over from my record rack build.
The turntable dustcover and top trim was $3.
Tap Plastics tubing $6.
The adapter to my shop vac was $7.
I paid $10 for the motor, $10 for the platter.
The rest was electrical, pipe, tubing, stainless screws, handles, carpet tape, hat ribbon, just a bunch of little things.
I also had the benefit of lots of free scrap metals!