We have ~200 non working old iMac’s what I can do with that

We have a lot of iMacs which i didn’t know how to sell or recycle. I know the companies that doing recycling prices for example Vega or amEska who working again with Vega.

But it is a lot of aluminum, so I think maybe someone can pay?

A lot of them it’s old but working 2011-2013-2014-2015 iMacs.

What I can do?