Hi,
I am in Sydney and the spray starch that the quilters use in a group I attend is just spray on starch like Crisp (its the one I just bought)> I think we can also buy Mary Ellen out here but I haven't tried it.
I did see a recipe on one of the blogs I watch for a great starch but I can't find any of the ingredients over here, it was using a liquid starch mixed with something else - I don't think we use starch much in Oz compared to our American sisters.
I love this site and reading about all the different techniques, I hope you enjoy it too.