"Frode Berg" wrote
Just a question if there are any mechanics here.

Not a mechanic, but I am an amateur who has installed an autopilot.
Not counting the time spent to test/repair/scrounge, which presumably
would not be necessary for a factory-new autopilot that comes with a
complete installation kit, I would say 30-50 hours was just about
right for me.

So basically the quote is right assuming your mechanic is no faster
than an amateur who has never done any kind of autopilot installation
before.

Michael