I don't break it down with dollars per hour but more like exerted effort in the smallest amount of time will yield the highest potential earnings on a swappable item. For example, most motors don't get break down anymore. The amount of time it takes to break down compared to the highest amount of income it can bring is too small. The high point is not to break it down, just sell as motor.as a result, I find that I make a substantial amount of money by producing the most non ferrous, wires boards, and so on in the shortest time and you would have just maximize your earnings.