Biz Opp In Bkk? Marketing Oz Prop Viable?

Hi. I'd like to explore biz opportunity in BKK. Was in IT (Financial Industry) before but last couple of yrs was marketing OZ/NZ property to well-to-do M'sians. Wonder if people in Thailand is open to investing in OZ (Australia)? Most Asians find it a great incentive to commit only 10% of purchase price in order to purchase unit in say Melbourne. Remaining 90% is not required until construction is complete. Therefore there is no progressive interest to be paid during the est 2yr period. Meanwhile capital could increase equity (ofcourse there is no guarantee!). Anyway, just thought to get some feedback from this forum. Would also appreciate if some who knows if it is legal to do that in BKK in the first place. Thanks.