2nd year/15kmile service cost for a 1100evo

Bike 2nd birthday was in March but has only covered a few hundred miles since (13k now). It's the big one with cam belt and valve clearance.

Called Inmoto Croydon just now and was quoted £750 all in, 8 months ago I was quoted £500 by the same dealer for the same service. Obviously the dealer denied the 1st quote by phone , not sure if it's due to more jobs during summer time or not.

My "local" MD racing in Walton is cheaper at £650 but they are not dealer, although they claim their service is more comprehensive compared to the dealer.

Are these prices competitive for an dealer / specialist? If not, any other alternative/recommendations in the South East? Thanks.