Want to buy ONE front Bilstein B6 to suit Alfa Romeo 156, 147 or GT

[warsch]

Want to buy ONE front Bilstein B6 to suit Alfa Romeo 156, 147 or GT
I'm looking to buy just one front Bilstein B6 as out of 4 shocks I have, only one is shot and I'd rather try to source one first before I order a brand new pair. Initially I thought of rebuilding it, but apparently it can't be done.
So in case someone has a spare one lying around, I'd happily grab it off you. I'm in Brisbane, but interstate is fine too, I'll arrange a courier.
Will consider a pair too, if not too expensive.
This is for a good cause - for my dirt 156 build