They are rare as hens teeth and command a premium, I've seen them change hands between £350 and £450.
The E46 M3 strut brace fits with a little fettling, and they are more easily available.
Bit of a tangent (no pun intended), I have a genuine BMW driveshaft for the 3.0si which I believe are NLA. I can't remember which side but I can check if anyone needs one.
Hello and welcome to the forum! I have one of the lower fender parts, not quite sure which side but I can check. I've also got the license plate base, drop me a pm.
I have a refurbished subframe, can be fitted with OEM rubber bushes. I also have trailing arms if your thinking of doing the trialing arms too. drop me a pm