I've never considered any Mario game to be the kind of game that HAS to be purchased on day one. They're great games but you already know what you're getting into. Nobody is going to spoil the story or become better than you online or anything. It starts off relatively conservative but, when other video games have blown their load and fallen asleep, Mario is still in there just pumping and pumping......turned myself on. Now, I'm going to watch some porn.
Anyway, next year this time, Mario will still be selling well and it will still cost full price. That's how Johnny C do.