What is Sams Club thinking?

So the other day, I was at Sams Club, which is like a Costco, but owned by Walmart. I was looking through the video games and I found some odd things wrong with their displays.
The first thing I saw was Rock Revolution for Nintendo DS.
The front looks all normal, but the back is something different.
The back of the Rock Revolution cover is really the back cover for Castlevania: Order of Ecclesia. Pretty weird. This is hard to miss, mainly the E 10+ rating on the front and the T rating on the back.
This next one is Mirror's Edge. I have known about this problem but now it has gotten a little out of hand. Every time I have went to this Sams Club the prices for Mirror's Edge have dropped to insane prices.One weird thing is that between the PS3 and Xbox 360 versions, there is an $11 price difference, and for all I know there shouldnt be a difference in the 2 versions that should cause this price difference. I told them about this a few weeks back, because come on, $22 for Mirror's Edge on Xbox 360? Thats awesome! When they went to go check the game, it turned out to be full price, which bummed me out. So now I went back Saturday and they never changed the prices. Out of all this confusion, I bought The Legendary Starfy for Nintendo DS for $28. Just thought I would like to point this out to anyone going to Sams Club. Later