There's an answer for this one, but I feel like it would be overly difficult to find. Regardless, I believe that it'd be insignificant. The reason other things can sell for so high is because many of them are extremely rare and not mass-produced, at least not to the extent that the Pokemon games were. To my knowledge, there aren't any rare versions, like special cartridges (such as to the gold Zelda NES games) or anything, for any of the Pokemon games, and none of them are super rare, either. The most rare ones are going to be really obscure spinoffs and not highly sought after games, so they're not going to sell for absurd amounts. The reason the selling prices of cards like Pikachu Illustrator is significant is because they're extremely rare. I doubt you'll be able to find a definitive answer for this one.
