iv been looking for my parents to come out, they don't want the insecurity of a temporary visa because of the risk of them being sent home after 4 yrs and having nothing to return to and the subclass 143 (i think it is??) parent contributory visa would cost nearly $100,000 for the two and iv just found out there is another $14,000 on top of that. so basically unless your relatives are financially loaded i don't feel there is much hope. somebody in PIO mentioned a bridging visa but unsure if this is of any use would need to look further.