I need a little help. Why are "Pre-wired" Dimarzio Model J pickups one hundred dollars more than a set that isn't? Forgive me, but I've never purchased new pickups. Does this literally mean that these have wires and the others don't? I know the Model J wiring scheme is a little different, but do brand new pickups normally come without any wires? Also, wouldn't I be able to pick up some connecting wires at a hardware store for a couple bucks? I don't understand. Can someone explain this to a newb?