Obviously a vehicle like this would be of interest mainly to Unimog aficionados.
That said, without even seeing detailed specs, it appears to have about $40000 just in transmission upgrades e.g. the Claas overdrive (~$8000) with 0.82 OD ratio and the UG 100-8 transmission with 0.736 8th gear. Why are these necessary? About 97% of the 6x6 Unimogs built of that vintage (a total of ~300) came with 6.94 axle ratios. Therefore giving a max road speed with 395 tires at rated 2400 rpm of 46 mph. Even worse than a MTVR at 57mph at 1800. With the double overdrive it will go 76.5 mph at 2400 which no sane person would do, but cruise economically at 60 at 1890, 79% of rated rpm.
Also “new engine”, etc. And they claim the camper is newly built in 2016, figure ~$300k for that, at minimum, especially with carbon fiber.
Actually dirt cheap compared to an Earthroamer HD at $1.7M.