Nintendo is the Disney of gaming. They induce artificial scarcity to try to hype up the perceived value and prestige of a game. It's like seeing PS1 copies of FFVII on Ebay go for $500, it makes you think "Wow that must be a great game". Also, to do the Disney thing where they can "bring it out of the vault" and do a reprint and get a stampede effect where everyone wants to get a copy before it goes back into the vault again.