What you make depends a lot on the price your yard pays for the materials you bring them and how far you break stuff down. Your available tools and capabilities also factors in to what you net for various items. Like miked said above take the time to read the old threads, there are some things that if your not aware of them can make things painful or unpleasant. Have patience, the knowledge and skills in this business come gradually, some by reading but mostly by doing. After a while you may figure out what is more profitable for you and sometimes the only way to know is to take something apart and see whats in there for yourself. Good luck