BMW rear brake hose

My BMW F650 (1994) needs a new rear brake hose (leaking where the rubber hose meets the metal fitting).

BMW have quoted $160 for a new hose, but not in stock.

I live in Hamilton and the bike is in Auckland, so I'm trying to find a way of obtaining a new hose and fitting it all in a single visit.

Some have told me that the old solution of take the old hose to a brake hose specialist who makes a new one the same is no longer a good idea as it could be knocked back in a WOF inspection.

I guess my questions are :
Is $160 reasonable for a new OEM, rubber brake hose ?
Is there anyone in Auckland who can make a new brake hose ?
Any comments on replacement hoses & WOF inspection ?

Thanks

BMW rear brake hose