I got a Haas kit, 9'w x 8' tall, stock color, including every piece of hardware, 2" thick full foam insulation, no windows, no opener, $650, I pick up at the local dealer's shop. They also never came out to measure, I had 1/16" dimensions of the rough opening when I went there, i did take pains when framing to build to the 108" x 96" within 1/16". I took pieces of my new vinyl siding into the shop when selecting the color for an accurate comparison.
The one thing I did differently was not to use the hex head 1-1/2" long screws that came with the kit to mount the track. I used GRK-RSS washer-head screws which are 3" or 4" long depending on the location they were in.
I did wind the spring the wrong direction when assembling it, that caused some weird behavior. But then I studied my other doors and realized the error. No harm done.