This may seem like a ridiculous question but I've never scrapped electronics. To me it seems like too much prep time, however I do have access to a large amount of e-scrap. I know the heat sinks are copper/brass or alloy but what else from a computer is scrappable? The cables I'd imagine obviously when they're stripped. What's a good price to pay for a junk computer and how much profit can you get from one computer?