Personally I am much more concerned about the thoroughness of the service than the cost.
It is easy to compare 2 dealers on their estimated costs for an annual service, but make sure you are comparing like with like. Some dealers are much better than others at diagnosing and fettling the "little" jobs that really don't have to be done immediately but add so much enjoyment to driving the car when they do get included. There are quite a few instances on a trad Morgan (and presumably others) where the "proverbial stitch in time saves nine" I would much rather they were done in time.
