Ebay bargain

beware. not worth £80 2nd hand by themselves.
you will need lots of little fixtures and fittings to go with them and probably need door strips and end caps.

I paid £75 for all the above.
although they are rare, keep your eyes peeled and you can do better than that
 
are RS4s skirts a lot more deeper than the s4 also would these be off a avant?

beware his rating isnt all that 2 negative in the past 12 months 75% may be ok in this case as nothing much can go wrong with some plastic.
 
I have these on my car they are held in by two screws on the ends just inside the wheel arches stuck on at the top and have clips for the underside which the A4 does not have so I bonded mine on underneath.