2005 320d e46 Oil Sump (kit). Where to get?

[NoddyBadge]

Hi all.

Been a while.

I require some knowledge transfer please.

Sump got hurt, needs replacement.
Tips? Places? Price expectations?
2nd hand ok?
Car is with a good mechanic - just trying to get some more info on cost.
Will hear he's estimates tomorrow.

Many thanks in advance.