The other option is to get a Retialer in Aus to import these from this particular source.
Her is another source. I came accros them via the hkastro forum and while researching a 6" MN telescope they also sell (looks much like the SN6 from Meade).
http://hkastroequipment.com/fj01-38.html
This scope is rougly 860USD. So looks like the same price. Note the link to the TMB vs Mavision link indicating this is the same scope.