Why do Nintendo game prices never fall?

[slab_of_bacon]

Iwata said in the past that he wants to uphold the perceived value... The games sell well so I don't see it as an unsuccessful strategy on his part. Normally when a product moves more copies it generally gives the maker more revenue due to exposure. I have to wonder if the psychology of it works the same way to someone who doesn't want to spend that much on a new game and if said person would want it more the longer they waited for a possible drop in price.