Not sure that a PWL is a
commercial licence?
I say that because there is a separate Commercial Wildlife Licence, of which there are several classes,
including one for dealers.
Do we know the type of licence the seller has?
In any event, having a commercial licence is not
per se probative of being in trade or commerce
for the purposes of the ACL.
For that, I'd also be looking for other indicators of being in business -
such as those used by the ATO.