Those folding prefabs on amazon

Anyone know much about them ?  Videos on youtube did nor really say much. About what i found on amazon, but more empty fluff

Where my lots are is very rural. So cheap is how people do it. Many people are outfitting the 12x20 ish sheds. Water is pricy so most haul it some even catch it off roof. I have couple lots on a well, that i will sell at some point. Right now im thinking 2 of those houses of amazon or maybe the sheds and or containers.  The mobility is a plus