Front brake disc for e46 M3.

As above lads, I am after a front brake disc from an e46 M3. Doesnt really matter on condition. Even a spare one that I can go for a quick spin on and then take off again.

I am trying to troubleshoot whether or not I have a warped disc, so I'd like to fit another disc and see if the noise goes away before I splash out on new ones. ~€250 each

Dave from Galway on adverts has used set of 46 m3 discs for sale around €40 from what I remember