Plus, I think they have a different markup structure over in Japan. In the US, the markup is bigger, but they rely on the 20/40/60% off sales in entice customers.
In Japan, I think the markup is lower and things pretty much sell at retail. Just about everything I want from Japan sell out within a week or even days of it hitting the shelves.
There's an article about their pricing structure somewhere, but I recall the general gist being there's fewer hands in the pot, so they don't have to mark up as much to get everyone a cut.