(Pic) Repaired it with epoxy and a heavy wire reinforcement.
You can see the wire in the lower section of the repair (grey steel-filled JBWeld epoxy). I'm not going to bother filling in the rest of the void (cheap-*** Audi design to void there…weakens the leg(s) immensely!) but I may drill out the hole a bit for the detent (see the hole on the other leg).
I did find a price from shokan @$85, they said they would have to check for availability in melange, but here's a pic of the repair: