I helped Murray at Cycle Craft in Western Australia buy three Commandos here in the US and export them last year. He bought them on eBay and had me store them for a while, and then haul them down to his shipper in Los Angeles. I picked up two of them from a California seller, and Murray arranged to have the third one transported to me from Oregon. It all went pretty well, except for one thing. We had no title for one of the bikes, and customs will not let you ship a bike without a title. We could probably have broken it down into parts, put it on a pallet, and shipped it as spares, but instead chose to have me go through the process of getting a California title in my name and signing it over to Murray. That's a bit of a pain to go through, and requires some "creative writing" on the DMV forms, but it can be done. I'd really recommend that you make sure any bikes you buy have titles. Two of the bikes were serious basket cases, and one was a lovely café bike done in the PR style. I think the basket cases were $3K - $4K each, and the café bike was somewhere around $8K. Murray said that compared to prices in Australia, they were all bargains, even after the cost of shipping and customs.
Ken