I tested it out on a metal rack and that magnetic hold is strong!
So, where they get this stuff is primarily just two sources:
1. An agreement with local dumps
2. People dropping off donations, trying to avoid paying the dump
So a mix of trash and dead people stuff.
They don’t pay a dime for anything they sell. It’s largely all profit for them.
I overheard that their biggest enemy is when something doesn’t move and takes up space