Sorry, but e-mail issues prevent me responding to the mail you sent, but since your question was on the U-Turn Coker wheel, I’ll answer it here. If your issue is around the price you need to pay to get unicycle.com wheelset built and sent to Australia, I’m not sure buying the U-Turn “World’s Strongest Coker Wheel” and having it shipped from the US is going to give you a good alternative. First, the wheel is not cheap, i.e. it isn’t billed as the “World’s Least Expensive Coker Wheel”. Second, I’d imagine all the same freight and duty issues you mentioned would apply, as Dave is based in the US.
If you want to explore that avenue, I’d suggest you PM Dave Stockton. You can look him up under “Users” as U-Turn.