First, I have to say that I have a good electrician but he recently quoted me almost $500 to install a NEMA 14-50 outlet, not including the $115 the city wanted for a permit. WTF? Once on site this is a one hour job if you know what you're doing and fairly close to the main panel. How do they justify brain surgeon hourly rates? Yes, because they can get away it. I'll admit that long runs of conduit take extra time but.... Most people I know charge overnight in their garage, and the main panel is usually located on an exterior wall of the garage. If not, I guess I'm lucky. Got the permit and went down to my local Home Depot and picked up $40 worth of quality parts. Installation took about an hour. I'm not an electrician. Used a circular hole saw from inside my panel to the interior wall, a small metal conduit with nuts and nipples (to prevent wire insulation chaffing). My receptacle was installed directly behind the main panel, two legs of 120V on a 50 amp breaker, a neutral and a ground using 6 AWG wire. All ready for the city inspector. My advice is to stay as close to the main panel as you can to keep the cost down. But really, $500-$1,000? If you know absolutely nothing about electricity, hire an electrician. Pay the vultures but do a search for better prices. Angie's List often has deals for licensed contractors that will do a great job for far less. Better yet, take out your own permit, hire a good DIY guy with the agreement that he only gets paid after the inspector signs off. Plenty of videos on this topic as well. Inspector coming coming tomorrow and S75 being delivered on Friday. I guarantee I'll be charging on Friday night, all for $155 (including permit) and a little of my time.