Our electric bill here runs 400 to 500 per month. On a heavy machining month, it will hit 600 max. I don't really figure the electric as a separate cost. Its absorbed in our overhead figure.
By my estimates, I would sell that gear set for around 9-10 thousand with the base. I usually work on projects with customers with their budget in mind. I could have made this set for $5K, but it would be a lot less detail and they would still be happy.
Lucky for me, this set stays here as a sample… We do stuff like this so we can blow peoples minds and make their little things they want look like childs play...