The Nintendo 3DS releases on February 26th in Japan, and Super Street Fighter IV 3D Edition will be available as a launch title on the same day. The game will cost 4,800 yen, which is the average price of regular Nintendo DS games.
Keep in mind that 4,800 yen shouldn’t be considered the average price of Nintendo 3DS software. That’s one detail that has yet to be announced. Super Street Fighter IV 3D Edition is likely an exception.