The total would be roughly $750 plus tax. My question to the forum is does this sound reasonable? I

Hey all! I'm new to the forums and this is my first post. Just registered a few moments ago. My name is Jerome and I am an owner of a white 2010 Cobalt LS XFE coupe. I bought it brand new from the dealer last November. So far, I really boutique hotels in manhattan love this car, its fun to drive and its really great on the mileage. It also looks great. One day I saw it parked next to the latest design Civic coupe and can say from looking at both that my car looked better.
Anyways, while I am happy with my car, I can say that there are some features that I do wish it had. I traded in my old car to get this Cobalt and my old car had cruise control and power windows/mirrors while this doesn't have power anything. Its a bare bones Cobalt.
What I really want to do is have cruise control and power locks with keyless entry installed on it. I researched and contacted several shops in my area and I've been told that both are possible to install. I've also shopped for quotes. I won't mention any names of shops here but the best quote I got was the following:
The total would be roughly $750 plus tax. My question to the forum is does this sound reasonable? I never had any experiences with installing aftermarket parts on a car before so I wouldn't know. Does anyone believe I can get it done for cheaper? This is all I plan to do, I can care less about any engine mods or any other aftermarket parts. I bought this car partially for its fuel economy anyway. I know this topic might've been discussed before. I hope its alright to bring it up again.
Does anyone have any input on this? Please, I'd really appreciate it. Can anyone refer me to a shop that they had a positive personal experience with and can perform this kind of installation anywhere in Northern California..?
For cruise control, you can retrofit the OEM setup in. You will need to check Pin61 of the BCM connector (Passenger side fuse panel) to see if is populated by a wire. If so, all you need to do is obtain a SS/TC stering wheel with controls and put it in, then have the dealer flash the car to turn cruise on (You'll need to do this with the aftermarket ones too). If pin61 isn't populated by a wire, you would need to add the wire and run it to the proper pinout in the clock spring for the steering wheel to connect to. The aftermarket units will have to do the same thing anyways, so you might as well get the cleaner boutique hotels in manhattan look of the OEM system.