I just installed a new circuit in my garage and it was simple. Two pole 30A breaker, #10 AWG wire (4 wires) to a 50A (4 wire) range outlet. This will then feel 2 hots, one neutral and one gorund into my control box for various electrical components 220 AND 120v. It was a little under $20... and looks sweet.
Since my garage is finished, I installed the oulet about a foot below my existing breaker box to make the install easier. It also happnes to be within 6' of where I set up my brew rig when I brew, so it is perfect.
I still need to upgrade my kettle to electric and get my control panel built, I should be brewing again by February(ish) The circuit was cheap, the kettle upgrade to electric will be cheap, the control panel however with PID, SSR, heat sink, switches and distribution blocks etc... will be much more $$$$$