$40.96 still a bit steep for you? Amazon also has third-party Nyko controllers for sale. They contain the vibration function and SIXAXIS just like a regular DualShock 3, though they are considerably less sexy. But at $14.98, you gotta make some sacrifices. It looks like they only have a certain number of the controllers for sale at this price, so hurry up if you are interested. The deal you want is right here.
[Via Slickdeals and thanks to Joshua M.!]