Because people should be smart enough not to buy from Walmart. Call me crazy or whatnot, but Walmart is a great example of what American corporations SHOULD NOT be like.
a couple of weeks ago, my mom went to get a 360 for me for christmas, and they didnt have any 360s or Wiis, there was one ps3 60gb left, and she bought it. I could have it, but the 360 and wii are so much better. We were planning on selling it.