I've just been checking pipes for airleaks on my 8v (in the dark

) I checked the PCV (black round thing that push fits into the top of the rocker cover) and it came off in my hand!!!!
The flange that pushes into the rocker cover came off, I've pulled the remains out of the hole, but now I need a new PCV (should help my stalling problem).
Anybody had to replace this?
I can't find them on the eurocarparts or gsf sites, so I guess it's a vag job, any ideas how much???