Yes it apparently seems that the cleaning fluid residue was not cleaned off thoroughly - I'm sure its not a mirror defect as such and wouldn't blame the Celestron brand (though the blame for lack of quality control lies with Celestron itself!) but rather that the Oz distributor's so-called tech staff and the online shop did not do the right thing by you -surely they must be too cocky/arrogant to treat a customer this way; and I agree that the least they could have done was to offer to clean it off at their expense
By the way it's amazing how you could have breathed on the open end of the scope to get to mist up the mirror at the other end and discover this terrible condition - must have been a very cold night!!!
Hope you make the right choice now to get back on track and enjoy the hobby in your neck of the woods as I have been down to as far as Kojonup and the skies are indeed very dark; only con is the travel time of about 3hrs
HTH
Cheers
Bill