Thanks MartinB,
Here's an actual breakdown of my costs:
Delta Fan - $15.12
MG90S Servo - $4.20 (I buy direct from Towerpro)
LAN Jack - $2.92
Cable - $2.40
Capacitor - $0.40
ABS Plastic - $3.57
Shipping(US) - $13.62
Total Cost = $42.23 (not including parts shipping costs from suppliers)
The costing does not include machine print time (about 10 hours each as I print at 0.2mm layer height and 50% infill) and my time to put it together, test it, and calibrate.
With a $50 sell price, I make $7.77. As MartinB indicated, hardly a money making venture, especially considering I can only produce about 1-2 a day.
I, like other makers here, produce it to give options to members that don't have the means to print themselves (yes, the files are available to print yourself), or don't want to mess with the assembly process and want a unit that works right out of the box.
I'm pretty sure I could make more money by just selling the print (no parts) for $20 and charge shipping to the buyer.
I always encourage to build your own. I'm more satisfied that there are over 2500 downloads of the design on
Thingiverse