I bought mine a year ago and paid $17,650 for it locally (plus Ohio's ransom) with the stuff you mentioned (60" MMM?). The real check to me was the Barlow's price given....your dealer needs to do better.
If the cost was 18,500 through Barlows, and your local dealer was only 600 high...... that's not that bad. It wouldn't hurt if they were a little closer..... but don't expect them to match Barlow's price. To me, I'd be willing to spend a little more to buy locally ..... if possible.