My trusty C250CDi is approaching its 5th birthday and 43000 miles. The display has just come up with service A3 required. It looks a fairly simple service, but MBs online service calculator says this is a £950 job, a B service plus change brake fluid & fuel filter (both done last year), air filter change and auto transmission oil & filter change, £64 and £345 respectively. My question is that £345 seems a lot for the transmission work, is it amazingly complex or just MB dealer pricing. Is it the sort of thing my indy servicer could do?