plus GST, plus DUTY, plus FREIGHT, plus Power Jumping, and any other costs, and they were $9250 new in Aus

Which amounts to nowhere near $15,000 which was my original point.

why do you sound surprised ? everyone had the same opportunity to buy it blind
the ones that didn't and waited until they seen it, played it, now want it are expecting to pay what ?

Pinheads are fairly up to speed on what they see as blatant profiteering and will simply take steps to find a workaround to avoid them (as evidenced by the importing a NIB Stern pin thread.)