I'd appreciated some feed back here; I purchased as my first bike 9 months ago a F700GS. It's coming up onto the 12,000 mile service and I'm a little taken aback by the cost. Is $500 reasonable? I know they're checking the valve adjustment and replacing the plugs, but that is still alot of money. I was shocked also by the oil change cost of $125, only 3 quarts of synthetic plus oil filter - 15 minutes?? Wonder what it costs for the K1600 bikes?