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It's for the box only - CZK 105k plus VAT, about $4.4k as of today. You can use any trailer, or buy the one you see on the picture for aditional CZK 22k, or about $1k.

I am not trying to sell it here, though, this is the first time I noticed it :) There are many more shots on their website, which is, sadly, in Czech only: https://caravanbox.cz/

I've looked at some high clearance trailers here in the states to tow behind my jeep but hadn't seen anything like this. I have an existing utility trailer I could possibly repurpose for something like this. Will have to dig around the internet some more. :)

I guess you can kinda copy-paste the concept :)

Oh, and yes, it can stand alone on these pillars you can see on some of the photos.