I had mine done by Audi last week, Engine Oil/Filter Change, Brake Fluid change and Haldex Oil/Filter change = £181, but I did supply my own Engine Oil so add £40 for that. The invoice actually showed £12 labour for the oil service.
The full service will include changing things like air filter, pollen filter, maybe spark plugs, anyone can change these items. I ask for an oil change, not a service, then whilst the car is in I ask them to put an air filter, pollen filter and spark plugs in the boot for me which I fit myself. Air Filter is about £6, Pollen is a bit more, and spark plugs are actually best brought off eBay for about £20 (do a search on here for the correct plugs to get). Its all negotiable, ask what you're getting for that money, phone an independent to get a better quote then go back to Audi and explain exactly what work you want doing, you don't need to be paying them to top up your washer fluid etc!