WANTED S4 B6 Alternator

[wardy124]

Evening all,

I was on my way to my lock up this evening and heard a noise like a flat tyre but without any loss of control of the car.
The battery light came on and I figured it must be the alternator belt flapping around, the lock up was 500m away so I made it there and got underneath.
I have no idea how this had happened but the pulley and shaft are flapping around a fair amount so it's new alternator time....

Can anyone recommend a place to get hold of a recon or decent second hand unit as the new part from Audi here is over 1k Euro and right now I just don't have the cash....

Any help would be amazing!
Thanks
Wardy