This is copy and paste from the QLD transport website for registering a new vehicle.
I guess that you consider a first registration a new registration, as this vehicle does not have a list price.
Vehicles without a list price
You pay duty on the highest of the:
purchase price—this includes deposit, trade-in allowance, dealer delivery fees, warranties and price of all optional equipment
or
market value of the vehicle.
The market value is the amount the vehicle might reasonably be sold on the open market.
So, market value could be interpreted as being what price could you sell the vehicle in the market 'today'.
Terminology here is 'SOLD' , not advertised for 12 months and not sold.
Here is a link the the QLD website anyway.
https://www.osr.qld.gov.au/duties/ve.../index.shtml#a