Unless you are a recognised zoo, you will need some very baggy pants and a plane ticket, or stay at home and associate with dodgy people. Either method has the potential to cost you a lot of money, jailtime or at very least risk to native populations.
You need to have the type of permit that zoos have, and you need to have a very good reason for bringing the animals into the country (they can't just bring anything they want in), aswell as lots of money for permits, quarantine etc.
not much can be added to whats been said already.
you cant legally keep them..thats it. zoo's are a completely different story and have different licences etc.
the potential impacts that exotics pose to out native is way to large to allow them in.
aussie GTP are native. most on licence arent aussie GTP and originate from NG, they were put on licence during the amnesty and techniqualy are exotics but are allowed cause they are on licence... its a grey area but they are here to stay.
no GTP isnt a xotict in NSW i checked the list of reptiles and i definiatly wont be buying them for a while as they are heaps of money ex. $4000 each for a Juvi