Mine was done yesturday 4th service and had the following replaced.....
fuel filter 06d115562 £9.50
Air filter 06f133843b £14.34
Spark plugs 101905631h x4 £41.16
Cleaner £2.88
Drain Plug n90813202 £1.26
Waste oil disposal £6.99
Longlife oil/filter i supplied to keep costs down.
Parts total £69.14
Labour total £136.63
Vat £37.23
Total price £249.99
That is for a 4th service schedule.
Your quote must be for parts only and not Labour+ vat at 17.5%.
3rd service is normal just visual inspection which normally is just oil change etc, and thats your lot.
My car is a Feb 2007 Edition30 dsg. 42k on the clock