Yes I would say it's a good price, specially from a dealer. Can't see you getting luggage in the deal at the cost of it although you will definitely get a good discount if you want to buy the bm stuff. Bought mine aa couple of years ago which was very similar and they offered me 25% off anything bmw I wanted.
Ask the dealer if he's got any good used luggage available to sweeten the deal. I was able to get a top box + rack added to me GSA purchase for a reasonable sum. The 'used' top box was in better nick than the panniers on the bike...