I picked mine up from our local "Aussie Disposals"
But I think I lucked out...$70 for the whole thing..frame, straps, bag, etc
Ditto. I wish I could remember what I did with the backpack, though, the damn thing went MIA after I took the ALICE frame off it.
They're harder to find at Disposals now, because you've probably noticed that Disposal stores these days don't stock much ex-military stuff. They only seem to stock civilian camping gear, or cheap military knock-offs.
To answer the burning question, yeah it probably will be marginally cheaper to buy one from the US. Even with the declining Aussie Dollar.