I got mine earlier in the week at cost price (working at a Citroen dealer has its uses), its from the C8 if you forget the part number (like I did!)
It looks great but the gap is annoying me. I'm going to find an o-ring that fills the gap...I'll let you know the size. Oh the radio reception drops compared to the VW one, I was struggling to get Radio 1 on some stretches of the M1 the other day.