Think about it, name something of size that is manufactured from Australia? Nothing, they don't manufacture anything. No cars, boats and these trailers.
I saw one of these in tow at a gas station today. Spoke to the guy for nearly 20 minutes. He mentioned the only problem he has had with his trailer is something to do with the door not closing properly. I guess you need to slame and left to get the door to connect as needed. Trailer closed up looked pretty nice. A lot larger than I thought.