A collector, especially one with OCD
"Gotta catch 'em all!", you know. Take all those trading card games: they build a new collecting fad out of nothing, people flock to it and buy that booster 100x times to get that ultra-rare card = profit.
And people call me crazy because I want to dig up a movie from the archives that, what requires about $200 (at least I try to find a couple of people to split the cost).