The 3D Classic title is now available for 150 coins on the North American Club Nintendo.
http://www.nintendoworldreport.com/news/31337
3D Classics Excitebike is now available until August 26 as a North American Club Nintendo reward for 150 coins.
The 3D Classics title, which currently sells for $5.99 on the 3DS eShop, was originally given out for free at the eShop’s launch. The first game in the 3D Classics line, 3D Classics Excitebike adds stereoscopic 3D to the classic NES motocross game.
I got 3D Classics ExciteBike when it was offered for free, and I don't like it. They ruined the physics and so now the game is a lot harder and the tracks don't flow like they used to. Stick with the original if you want to play the game, or better yet, get ExciteBike 64.