I've seen this vehicle in the flesh, and in my opinion the body extension could have been finished off a bit neater and in such a way that it looks like the original body. The small window looks very out of place against the others, and the loss of continuity of the body moulding / rubbing strip makes it look scruffy.
The vehicle has a heavy roof rack, a twin swing away rear bumper with two steel spares on it, the tow bar has been extended to allow the trailer hitch to clear the spares, and that trailer looked to be weighing it down a fair bit. How heavy is that trailer?
I think that the whole set has partly lost it end goal along the way. Yes it's spacious, and all the creature comforts are there, but it's all at the cost of reduced off road ability, immense weight and most likely shocking fuel consumption. Not to mention the price
I think you'd be better off with a 4wd motor home, something like a unimog, as then you'd end up with something that still has decent off road ability, loads of space to travel in comfort plus you could access the living space when ever you want, instead of having to set up camp all the time. Plus a would think that a truck wouldn't end up being too far off on the fuel consumption, compared to the overloaded 100, and a truck wouldn't even be breaking a sweat.
I think that that will remain on the market for some time. It's already been atleast 7 months. It's so specialised that it would require a buyer with a very specific set of requirements.