PEZ dispensers have always gone through periods of being cool and then disappearing off the scene for a while. They seem to always reemerge again at some point and the kids will inevitably go crazy for them, just as they have since they were invented in 1927. We know the concept is great - PEZ candies are delicious, and the dispenser is such a novel way to carry and consume them. But that's not what collectors want them for these days.
Certain PEZ dispensers are worth a lot of money now - some more than others. Mickey Mouse, Santa Claus, pre-90s superheroes (such as Wonder Woman and Batman), and 1955 robot PEZ dispensers are all high in value, as well as PEZ spinoffs, such as the PEZ gun, and the locking cap dispenser. Or maybe you have the 1982 World's Fair PEZ Dispenser, which sold on eBay for a massive $32,000 in 2006.