SF4 Madcatz PC bundle (incl. game and Fightpad) is $34.99 at Newegg

Classic Fighting Games Street Fighter IV
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Link

Includes SF4 for PC and a Madcatz Fightpad. I never heard of a PC-only Fightpad, my guess would be that it might be the 360 version, obviously can’t say for sure though.

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It’s the X360 controller, works perfectly on PC.