Hey motodad, not that difficult, just alot of reasearch, not really sure of the regs. in Australia as I am located in the U.S.A. To get started we bought some bikes and tested the things until they broke, pushed beyond their limits, to get a feel for the product, then order parts and see how long it takes to get them, etc. Initially I was going to order from China but was leary of sending money overseas, plus their minimums were way too high for me.Found a distributor here in the states, yeah I probably pay more but peace of mind is worth it. I can get bikes/parts in a few days, don't have to worry about clearing customs,duties etc. You are right, there are so many versions etc., same bike different name, oh well. In my case as a dealer/re-seller, stock normal wear and tear items. Get with an Attorney, and know your tax laws. Good luck.