Rod: I replaced my Song3s with BePure2s about a year ago. Good as the Song3s are, there is no comparison with the BePure2s. As Jim has stated, the Purifi drivers set a new standard for accurate and effortless sound reproduction. Combine that with the beryllium tweeter (which my ears prefer over the Real ribbon in the Song3s), add in Dennis Murphy's genius crossovers, wrap all the bits and pieces up in the Salk team's typical stunning craftsmanship (I bought Jim's demo pair in Harborica) and you get a work of art you can listen to.
As for selling the Song3s in Australia, have you considered consignment? When I moved to VIC some years back, I brought along a Levinson amp. A year later, I worked with a local shop in Melbourne to sell it on. Easier to deal with than selling myself. Could be worth considering.
Enjoy the BePure2s!