One way to create incredibly high value and demand is to only sell something at certain stores. If you want to make it even more exclusive, only sell it at Disneyland. That would mean you have to spend a couple hundred dollars just for the opportunity to buy something. That's what I love about Disneyland. You're basically paying to go inside and spend more money. What a racket!
Disney's Marking the Millennium was a VHS only sold inside of Epcot center. That means that there are probably more people who haven't seen this than there are people who have seen it. That makes it a collector's wet dream. On Ebay this VHS is going for thousands of dollars, though that doesn't mean anyone is going to buy it for that much, but you never know.