Noone seems to want to post liquid chemicals, there's only a powder C41 at Freestyle, all the rest are ORM-D. Is there anyone who'd post liquid chemicals, and is it worth it once the shipping's factored in?
Look at the German suppliers like Fotoimpex & Maco; they seem to be able to post stuff the USA retailers can't. German post is really slow - I ordered Adonal from Germany on Dec 2nd and according to the tracking it is still in Germany, I'm assuming it's Customs or just a really slow post system.
Which state are you in? There are a few of us in Adelaide that do occasional orders but if we have to post to Sydney then that will likely wipe out any postage-savings of buying together.
Us Aussies should get more organised and set up state or city based buying groups. As you say, it doesn't make sense for someone from Brisbane to get in on an Adelaide based order as the post from Adelaide to Brisbane will add to that buyer's cost and be a pain for the organiser. If it's city based, e.g. Sydney, it could work well as long as everyone agrees with the rules and someone is prepared to do the organising. Ideally people would meet up to collect the supplies, negating the need for any further postage. Depending on what is required, there could be one order placed with B&H, one with Freestyle, one with a German supplier for chemicals and European films, every few months.