Never had a turbo installed but did most of the upgrades to my oem turbo. I would think yeah super expensive. If that is just for the labor. Think $100/hr (very expensive rate) should only take a fee hours to install. My shop does 60/hr. Im sure someone will answer who had theirs done. Goodluck
The same shop charged me about 700 or so for a clutch install... the dude must of misunderstood me; it should be pretty cheap to do a turbo install. I may just ride up there next week and talk in person.