ive just had this myself went to main dealer and quoted £183 for front pads only + £37 for pad sensor for my xfs , for the same overall I would have paid at the main dealer for the front pads and pad sensor I have managed to get brembo front + rear brake pads , front and rear pad sensors , mtec drilled and grooved front discs.
pads and pad sensors from eurocarparts and the discs from mtec website