Please never buy a pup without seeing it and verifying the breeder is legit. Too many puppies in Aus are from puppy farms and are ill, have issues and often social problems and more. Can cost their owners thousands in vets bills but also often end up dumped or handed in to rescues.
Go via the Aus KC for a legit local breeder and don't just settle on the first one with pups available. Be prepared to wait for the right dog locally and see the mum before pups arrive if possible, so you know it's her having them, then go back to see mum and pups together when smallish still, then again to choose one.
Honestly, puppy farms are rife in Aus and you could end up with more than just a huge pile of vets bills. The heartache you may go through with a pup bought blind would be terrible for your family.
Fwiw are you used to beagles and their traits? Ie total lack of recall and big tendency to wander off if off lead ever? They are good natured dogs but usually very poor to train and let off lead.
I am sure you could find a good genuine local breeder even if it means you wait a couple of months. If you are going to make a lifetime commitment to get a dog, do it right from the beginning. Far better to wait a little longer than buy a pup in a very dodgy way via long distance.
Pleas I cannot stress enough how not to go about getting a pup. Reconsider, even if it means you wait a while and find a good local breeder who is genuine and who will hopefully have had first jabs done, worked, full papers and hopefully even insurance for the first couple of weeks for you. And who will also be happy to take the pup back if for some reason you can't keep it.