>>>>Mark and Gavin will no doubt be along with specific information, but you might consider unbolting the neck and shipping it in a smaller box and not worrying much about the case.
Jackson has it. Pop the neck and send in 2 parcels. Of course, the case gets left behind.
Compared to Australia, US prices for second-hand are very reasonable. No need to tell you that it's a buyers market. The thing is getting them here. If it comes in a case, total cost to you (by the time it gets to the front door) is going to be approx another 70% on top of what you originally paid. My last 2 Basses came that way but IMO, I was still in front compared to what I'd pay here. And finding what you want here is another issue.