Yeah, that is a custom (rigged lol) Berkey water filter. I gave the stainless Berkey to my mom but I had extra filters so I made this one.
I don't know the exact price, we never did tally all the receipts but I think it was approximately 30k CAD. The trailer was used and we modified it quite a bit to make it work. I recommend people get a new custom trailer though I don't think the money saved was worth the time I spent on it.
That's beautiful we have been using berkey water filters for 12 years.
For those that want to know it is 24000 usd= 30000 cad