The last time I priced this, I was looking at about $2,500 to have a second breaker box setup in my garage, with 100A service.
Also as part of this was running 240V around my shop. I planned to convert my table saw back to 240V from 120V where it is now and this would open up other possibilities.
But once again, not twisting arms here. I know I'm the same way about things I don't think that I want to do. I can easily come up with a pile of excuses and reasons why not to do something. Then when I change my mind, suddenly I have a pile of reasons for doing what I decided to do. It's human nature.