Devil's advocate piping up here...
My local dealer bills out for $80/hr labor + parts
How much are the parts, how much are the tools, and how long would it take you to do? On my prior bike (Buell Blast), replacing the pressure plates on the clutch was a 2 hour job on a good day.
Now, realize they have to pay for licensing, training, leasing the building, the overhead of the front desk and management staff...
But to support why you should do it yourself - aren't you supposed to soak the plates in the oil you plan on using for 24h prior to installation? Guaranteed they won't do that. =p