About 9 years ago I was offered 3 full containers of Slate at "the right price". I said no thankfully. Turned out they had literally fallen off a container ship at sea and had been salvaged.
Imagine the salt impregnation in the tiles haha !!
Plus I havent used slate in my area since the offer. just not the fashion
Imagine trying to offload that amount of dodgy stock.......and still have a conscience!