The AU distributor had a good stand at the TDU expo area. I'm pretty sure they're Melbourne based. Hopefully the main MB website will have their contact info and you can get in touch. Their chain keeper is an excellent piece of kit to have in the toolbox.
Not local to Melbourne but Bikebug in Sydney stock the Morgan Blue chain keeper. I purchased some bibknicks I couldn't get locally from bikebug on a Monday in midJanuary and they were delivered by courier 9:30am the following day
"More waffle here than a BBC breakfast!" - The Duckmeister