Sectional Gate builder?

I did a quick search and did not find what I am looking for so here goes.

I have a wide opening for my car park and no fence  space so I have decided to have a sectional gate built and curve the track down the inside wall of my yard.  My wife found some nice videos on youtube and for a mere 60K I can have one built ( motor not included ) by the guy that made the video but did not want to come give an estimate because we are "so far and shop busy".  He had my wife send the measurements for the quote. SMH.

A couple of other guys that have never built one assured me it is no problem, but they also were high. At those prices I can buy a 2nd hand welding machine, go get new cables( because they ALL are broken, right), and build the gate myself for a fraction of the price. There has to be a shop that does good work for fair money.

Has anyone installed one of these sectional gates, had a good experience, gotten a good price, or all of the above?

Thanks in advance for the recommendations.