I watch both Pawn Stars and American Pickers. First, guys, DON"T go riding out around the country in a luxury van when you're trying to get stuff cheap from people. One thing I do like about the show is that nearly all the collectors are like the ones that are the bane of our lives. They don't know "why" they don't want to sell today, just that they "have" to keep the item a little longer until it (generally) is worthless to anyone.
I really love the guy on Pawn Stars. His customers hear the "experts" say what the item is "worth" and then Rick offers them half or less, simply because he has to make a living. He really does have a neat job.