Hi Steve, no problems- yes I currently still own a Mango and still ride it quite a bit. Unfortunately for you, I don't have any current plans to sell. There were once 3 Mangos in Brisbane, but only 2 remain, and I'm pretty sure it's not for sale either.
I did consider trading up for a while, but the AUD/ Euro exchange rate was not favourable. Of interest, there is a guy doing a modernisation and redesign of the Greenspeed Glyde and Ben from Trisled has hinted that he is working on street usable velomobile, so watch those spaces for locally produced velos.
The guy who runs Recumbent and Specialised Cycles in Canberra, Brett Edwards, I'm pretty sure owns a Mango, may be worth a contact- they have a FB page.
Whereabout in Tassie do you live? I lived in Launceston for about 17 years before moving to Bris, my recumbent fleet is Mango, Greenspeed Aero, Bacchetta Giro 26, HPV Grasshopper and a Greenspeed GT3 trike!
All the best with your hunt for a velo, keeping an eye on the European second hand market could be worthwhile as well.