What I can tell you is don't service it in Australia. I just got a couple of quotes here for parts only and it was 58% CHEAPER for me to fly the OEM parts in direct myself.. You think England gets ripped off!! try rip off Australians... the monkeys here should be shot at dawn..???
HROwen are picking my GS LE on Monday, will update on the experience, but so far excellent, especially compared with the garage that I nought it from!
The parts for a service cost more than £299. £450+ is more likely. A good specialist is as good, if not better than a main dealer. The oil, filters and spark plugs are around £200!