The cost of building materials are still high so ...

The fact that somebody effectively dovetailed those with standard cinderblocks is both impressive, and a nod to the good old days when most batteries were the same size.

I'd wager most of those are 6 volt.
I was tripping on the size thing. The deal is for what those are worth it to Recycling yard you could buy two to three concrete blocks with every one of them.....actually more than that ,depending on Weight. I think last 12 volt battery I scrapped I got seven bucks for. Maybe 10