To be the "old generation" in the near future (new CPUs are out I believe but not the new Dell XPS 15) but still a solid spec imho and when I've looked at this spec brand new it's often >$5k without the big 25% discounts. Also wary of what the new model will cost with the AUD/USD situation (though seems to better than rock bottom) and availability due to supply chain issues due to coronavirus.
You can also buy extended warranty for these.
Listed as "As New" (cancelled orders or old stock?) and not "Refurbished". 29 units available as at 6pm 25-Apr-2020.