We just called our dealer back about something. The price we paid ($80,750) was discussed.
Apparently there is a "Costco" price which is what we got. For a standard edition it's somewhere around 80. I'm sure depending on where you live. Apparently you log-in to Costco.com and find a participating dealer and they will honor a price near that.
Just a heads up, wife telling me all this, not sure the legitimacy but worth a try.
Tried this myself. Local Costco dealer said they were excluding the LC from the program and offered no discount. Seems like a good price if your local dealer honors it.