Can anyone please recommend an internet BMW parts retailer that will sell
to Australia for me?

I need a new antenna mast for my M535i, but trying to find someone that
will sell me one on-line is proving extremely difficult.

UK not an option I'm afraid because the exchange rate is extremely
unfavourable to me. US, Singapore, NZ or Australia are all good if anyone
can recommend anybody in those places.

I've tried unsuccessfully contacting http://www.alloembmwparts.com/ in
America but they don't reply.

My old mast is chrome, has a toothed nylon cord and has the Hirschmann "h"
on the tip with '04' below it. I think the Hirschmann part number is
Z4010-18155.

Thanks for any help offered.