A long time ago my scrapper mentioned that if I,
"Found stainless steel, but it was magnetic or very lightly magnetic, keep it separate" & he "would give me a good price for it"



I expect it was, say 50% of the Stainless Steel price (which was higher then) & worth buying in largish lots (100Kg+)
Stainless normally turns up in larger amounts that any nonmagnetic metals & weighs more too.