George your prices are pretty far off from what I am seeing. When I build a Van on RAMS site, I repeatedly come up with $45,000, not $35,000. Anyone who has been around a bit knows that practically NO ONE buys a Winnebago at MSRP, and 30% discounts are there for the taking - that would put the Solis Pocket at $67,000. That's a difference of $22K for the build, NOT $60K as you quoted. For $67K you can't buy a Suburban these days, and I'm guessing you'd also be hard pressed to find even a cheaply built small class C, which you can ONLY use for camping (they don't really double as a 2nd car).
For $22K one gets operable windows, screens. window covers, a galley, dinette, bed, plumbing. batteries, solar, electrical, insulation, a floor, ceiling, walls, water tanks, air conditioning, heating, a fan, solar, etc. For those who are intimidated, or just do not want to build a Van or deal with a custom builder to get one built, I'd say the "value" might be better than the picture you paint. The 18' length puts it in the 2nd car category, which could have appeal for many.
I personally have been looking for a Promaster as a daily driver - RAM does not make a passenger van (and I don't really need one anyway, I need the cargo carrying ability and a mobile office). Outfitters that make nice passenger Vans are well above the selling price of this pocket.