Comment by EngCanMan

Umm, I encourage you to do that math a little closer. A contractor would have to;

Come to your house to quote, and only land 1/4 quotes maybe.

Schedule the workers

Order the equipment.

Get an electrical permit.

Pay for the truck and all the tools.

Insurance for the company and trucks.

Advertising costs

Warranty and callbacks

I can assure you that this is not the get rich quick scheme you may think it is.