i went to target today to use the $99 DS printout thing and when i got there he gave me the Red DS + Mario Kart Pack for $99! so i saved $50 so i bought Animal Crossing WW too.
heres the thing: http://img507.imageshack.us/img507/154/ds1ca.png
You should try it too if you havnt got a DS yet. You might run into a know-nothing employee too.