Not a pro but 1.2 hours to change even one strut sounds like too little time to me. I’d do well to change one in a Saturday morning.
I will relate to you a work friend’s theory about high car part and repair prices that I heard many years ago. Don’t fear or dread high part and repair prices. They keep the system healthy and prosperous enough for parts and service to be there when and where you need it. Isn’t it good that when your car breaks, there are plenty of parts and people available to get you going again? If you don’t like a mechanic, there is likely another a few blocks down the street.