G'day Andy and welcome, plenty of Aussies in here.

There are no dealers in Australia that I know of, ajoe offers some services though like AR coatings etc. If you want to order a watch off a website any of the dealers here will look after you. The ones most highly recommended and talked about, are for a reason, particularly when it comes to service before and after the sale. The US based dealers are all excellent too.

I don't think I have ever heard of anyone having any customs issues in Australia, I certainly haven't, they have more important things to worry about. I bought and sold gens for years too and never once had one scrutinized by customs, it is just not an issue to them, unless you tried importing a truckload of them to sell :P