Sorry, I'm getting a bit confused here (but it is late in the day

). We
DO allow the export (overseas) of native birds, and DEH
will issue export permits on a zoo to zoo basis, but they will not allow the export of birds to private individuals overseas.
The export of native birds (or any other native species for that matter) is not at all about money - in fact, it is illegal to sell native animals to overseas institutions. Costs associated with the export (vet checks, crates etc.) can be recouped, but native animals cannot be sold. It's more often about adding to, or starting breeding programs in other regions, or in exchange for animals that are imported into Australia.
Zoos in Australia can however, sell birds to private individuals
within Australia, provided that the birds have been offered to other zoos first, and they are unable to be placed in zoos. A number of zoos will sell birds to private individuals, generally via their state avicultural society.
Does that make sense?