While the CORE truck isn't a bargain at $140,000, in my opinion, that isn't an unreasonable price. It isn't what I would build for myself, but when you consider labour and materials cost on top of the price of a new truck, the numbers add up quickly.
We all know that you can build a truck for less than 140k and certainly less than 380k, just as you can buy a used LS430 for 20 grand or a new Rolls Royce for $500,000. If you were to buy your own FE140 (about $40 grand) and add quality axles, leaf springs, transfer case, air bags, seats, bumpers, winches and a flat bed, you could easily spend $50k in parts. If you have your own fab shop, you have a nice truck for under $100k. If you are paying someone to do all of the engineering and construction, you are looking at $125k - $150k in total cost.
I do not see where fitting out a composite camper shell on the truck costs another 250 - 300k, which is the price of the average 3 BR/2BA home in the US, and that is one of the reasons that I am not an EC customer. A 3,000 SF house in suburbia or a 7' x 12' box? Hmmmmmm