Leaving the elements in cast Ali devalues the Ali. (nightstore heaters etc)
Sometimes the scrappers have taken my copper outer elements as 'Pryro'. Pyro has its own $ value per Kg (Lb)
(Pryrotechnical copper cable, its the think copper cable with the copper outer casing & a thick copper wire up the center, with a white powder in between them, I have only seen this in street lamp posts)
Most electric stove elements have a stainless steel outer coating with a very thin Ni-chrome wire up the center, as well as the white powder insulator in between them, same with most similar elements, wall heaters, ovens, nightstore heaters etc.
They don't seem to be worth anything & I have never saved up enough to find out anyway.
Every time I have tried to pull the wire out, I ended up with the unknown white powered everywhere & the wire broke by the time I got the first 1/4 of the wire out, & it took ages to do.
Ni-chrome has its own $ value, A common Ni-chrome alloy is 80% nickel and 20% chromium.
This could be sold if you have enough of it, it'd be worth selling, I can't find a price for it.
It would have to be bare Ni-Chrome, like from toasters, hair driers heaters etc etc.
This place buys it in USA http://www.vossmetals.com/