You can only buy backgrounds on New Super Mario Bros. (DS)
game stop
Oh, definitely super Mario bros 3. If you have a wii, buy both, though. It's only 10 bucks.
Buy it at any game store
I got mine for free by my brothers friend in collage. But it is a game to buy. It has amazing features
Buy an Action Replay, put in the codes you want to use, and you have your hacked New Super Mario Bros.
You can buy it at any store that sells video games
if you mean super mario 3d land , its not out yet!!! IT COMES OUT NOV. 8 2011!!!! but if you mean the first super mario bros, get it on wii ware ,dsi ware ,or nintendo E shop
You have to buy it with your star coins in the first castle on world one
The Best Placees to Buy Super Mario Cards is Target and Walmart
You have to complete a Castle or buy something with your Starcoins to save. i no its pretty rubbish x ;)
you can get it for $39.89 on Overstock.com or you can get it for $49.99 at most stores that sell it like best buy and gamestop.