Apparently there are 7.8 million pet birds in Australia, roughly one for every three humans.
After a $300 startup cost for the cage and accoutrements, the annual cost for your average parakeet will be close to $200 if it is healthy and does not need to see the vet.
Before it falls off the perch for the last time you will have forked out around $3,000 plus an hour or so a day of your time to stop the poor anuimal from going insane.
So tuppence in your dreams.