I agree on all counts re frames being a pain and getting a pro to ship etc.
When considering having a bike sent as parts however just remember that the snail mail surface option no longer exists between the US and OZ and so, even if using the cheapest airmail rate it'll cost you and if you try and cut corners you are MAD if you don't insure each parcel.
If the seller is agreeable ask him to group and label (and hopefully take detailed pics) the parts and secure them in bags etc
Check with customs about the minimum declared amounts before GST is attracted (it used to be $500AU which is the total price to get the part ie the item cost PLUS the stated postage!) If you have a heavy expensive item you could attract GST but I also seem to think the threshold has been raised to as high as $1000AU. This applies to anything coming in via mail. If you are doing a declared import the GST will be levied on the bike too and this is where a good importer can work around things like overpayment etc.
BTW - I am going to look into Firko's shipper as the guy I use, as good as he is, only ships twice a year and I'm looking to get things happening as a constant flow with six month delays before ships 'sail' etc.
If you plan on doing your own import through a shipping company get ALL the costs as the very first bike I imported cost me a bloody bomb due to rip offs such as quarantine cleansing, handling feels bullshit bullshit bullshit. I a pro does it for you they have all the contacts at both ends of the process and so all you have to do is arrange for your friendly seller to get the bike there (unless they are a thief like my mate Thurlow Paul Schmieding who promised to pull the bike down (I have pic's of that part of the process) and then on-ship (and that part my friends never happened!)
I have serious reservations about buying whole bikes from the US - especially through evil-bay who don't give shit if you get ripped off by someone like Thurlow Scumbag or whoever and so if the seller smells like shit (which Schmieding didn't I must point out) chances are you are setting yourself up for a rough ride so please be careful. And SAVE ALL CORRESPONDENCE, PAYMENT RECEIPTS AND PICTURES. If you know someone in the US ask them to make Stateside calls on your behalf which should make the guys stay honest. Bottom line with the guy who stole the money from me was he KNEW he could get away with it (Shame he'll get cancer and die, lol)
Note also that there are shipping weight and size limits same as here and often the Stateside transfers require the seller (or you) to arrange for Fedex etc to get the parts to the shipping company.
As Firko says, get the seller to ditch or resell any junk on the bike too - that can be anything from some fades and cracked old guards to exhausts and wheels. Bottom line is if it's junk you don't want it.
And Firko - what is all that weird stuff you have been buying on evilbay - A DEVIL GIRL METAL LUNCHBOX and a green laser pointer (you'll need that for the slide night!!!)
See you at the back of the pack (after watching some of the fast guys at Buladellah on the weekend I'd say well back, lol!!!)