If you wanted a stick for use with PC, I'd recc the 360 one over this.
I'm not sure why it costs more, but I think it might have something to do with the Microsoft licensing and the extra security chip that enables it to be used on the 360.
But the sticks are okay, I don't think they're that great to be honest, especially when you compare them to the Hori Real Arcade Pro series and other arcade sticks that use authentic arcade parts.
Like mentioned above, if you have specific questions/concerns, check with the arcade stick thread.