They are all MY24 models that I've seenMaybe, but the QM at least has to be a MY24. If it is new unsold stock and not a demo it will still come with a full warranty.
Curiously if you look at Carsales (Australia's dominant online car sales platform) there are no Quartermasters listed as private sales in the whole of Oz, all are from dealers (mostly Ineos dealers). Sure the private sales may be happening on Marketplace instead but weird there is not a single one in Oz on Carsales. Does that mean there have sold almost none, or those that have bought them are satisfied and hanging on to them?