Hi,
the idea behind is to have a simple and cheap solution for a room to work, keep the tools, spares etc. etc.. The complete trailer and container so far cost so far ~3.300 EUR, incl. paint, shelves, ... . Try to built something in a conventional way - no chance.
Plus IF I have to work or move or ... somewhere else I just put the container on the trailer, connect it to Big Foot and off I am. :smiley_drive: