I paid £341 in the end. Didn't have time to source my own oil as I was out the UK, as I am now and just went ahead with the filter too as £90 is nowt really and pointless cutting corners. Next service is 2,200 miles(!!!!) as the compooota is telling me I need new REAR pads yet I have 28000 miles left on the fronts. WTF?
How active are the stability / traction control systems on the car? They will be using the rear brakes to keep things in check, and so potentially produce excessive wear.