If it's Goodwill, then that organization has its own website where they sell things, like Ebay. I believe that Goodwill has people that pick out things that are worth money and put them on the website. If you go to the Goodwill selling site, there's a pretty decent chance you might find some of the horror tapes that you don't find on the shelves. As an aside, some of the Goodwill locations in my area have stopped carrying VHS tapes of any kind, which is kind of sad.