I havent had any problems ordering with doopydoos but I know others have. I have had two of their kits, one a hasbro mod and one for a pvc pipe build. They also do a full resin kit which I have heard can be brittle so you would have to be careful with it. I have only ever seen two threads which mentioned Stikers mods, seems to be nice detailing but from memory I don't think he shipped to Aus so I never looked for follow up info.
Good luck what you decide and read, read and once you think you know it all, read again lol