Number Plates

[KIWI]

But if I read it correctly, one can sell plates in NSW by transferring "The Right to Display" to another registered owner in NSW. And yes, fees will apply but payable by the new owner.

https://www.service.nsw.gov.au/services/...ber-plates

Best bet is to approach a Service NSW service centre.

+1
There appears to be some ability to sell in NSW.
A Google search found several companies who advertise them for you.
See PL8Sales for this explanation:

If I sell my car, can I keep the plates?
Yes, when you buy personalised plates or custom plates, they become yours for life (or until you sell them). You can transfer these plates to a new vehicle but (sic) filling out a form at the Transport for NSW service centre. When you got your special plates, your old plates were probably cancelled. So, you'll need to get some new standard-issue plates before transferring ownership of your car.

Note that I have never used PL8Sales and therefore cannot recommend them.
PR