One problem is that it cost USD 585,000 at the time it was prefabricated. It goes to show you that prefabrication and small don’t necessarily equate to affordability. For this reason, Lloyd Alter called it a “problematic prefab” back in 2015.
Of course, there are ways to make a home like this much more cost effective. I’ve been looking, on and off, for over a year for a piece of land that would be suitable for a project like this. I’ll let you all know if I find something.