I have them all, the man is definitely an artist. Some of the videos are hard to watch, someone bending chicken wire for an hour is tuff. If you want to make Hydraulics out of screen door openers you will have all the info you need. If you want to watch a great haunter (artist) at work, they are good to get. If you haven't eaten the info that the web has to offer and are new to this world, they are good to get. If you been haunting, then you may want to be diffidently about your purchase. In other words buy one set at a time.