$305 for nema 14-30 and 14-50 both installed right next to panel in garage, estimate less than 6’ of wire. Included moving stuff out of the way and repairing drywall between sockets and panel when done. 2 new Breakers, 1 for each. This was licensed electrician from electric company, not handyman who also does electricity. It’s a lot for an hours labor, but as others have said, parts and getting to me aren’t free and burning my house down or killing myself are significantly more expensive. ImAt $300 estimate I did not bother with another quote.