Build the door you want and see what it costs fitted, with the old one taken away. No form, no "call for pricing", no salesman in your driveway on a Tuesday evening.
Installed, old door removed and recycled, spring and track included. The only thing that moves this number afterwards is an opening that is not standard — and we measure before we order, not after.
Two thirds of the calls we get are a spring, a roller or an opener sensor. Those are a morning's work, not a new door.
They look superb in a brochure and they are cold, heavy on the opener, and awkward to keep clean. On a north-facing detached garage we will steer you elsewhere.
If it is unheated, R-16 buys you quiet, not warmth. Worth paying for if you use it as a workshop; not worth it if you park in it.
A broken spring on an eight-year-old door is a $320 repair. Anybody quoting you a replacement door off a photograph of a snapped spring is not fixing your problem.