No to be too rude but the pricing on those is insane! Unless I am missing something, these appear to be uninsulated wooden boxes on a steel utility trailer frame with no heat, no fridge and and no plumbed hot water for $20K. For that sort of money I would hope you would get a heated, well insulated, aluminium or composite trailer with all the bells and whistles. To show how out of whack this it, it is $1000 to add a second battery or $1200 for a 160W solar panel.