Yes, I know that Street Fighter IV is old news now that Super SFIV is out. But say you don't have an Arcade Fightstick for the Xbox 360 yet. Or, maybe you want to step back and see how things were in the good ol' days, some three months ago, before all the new characters and game enhancements.
Maybe you'd be interested in this deal from Sam's Club.
They have a bundle in their retail stores that has the Xbox 360 version of Street Fighter IV and the Arcade Fightstick, all in one box for only $42.88. That's about what the game originally cost! Take the game and dump it at GameStop or something. Keep the stick.