My b7 rs4 is well out of warranty with 85500 miles on it when i have needed wok done,these are the costs;
new clutch Audi £2658.66 then dropped to 1882.74 when itold them APS price of £950.00 all in.
New front discs and pads all round Audi £1360.00 APS £680.00.
Drc rear shocks Audi £4980.00. APS replaced all suspension with KWv3's £1380.00.H&r sway bars £300.00.
The clutch from APS included new slave & master cylinders.From what i can gather there are three or four good independants on this forum depending on where you live,all i can say is use them for anything you have to pay for and stealers only for warranty work.