I was able to successfully add cruise to my 2009 base Pontiac vibe.
The stalk I got was this one http://www.ebay.com/itm/191620284578
Toyota Camry Corolla Matrix Prius Yaris Cruise Control Combo Switch 84632-08021
Just make sure you get the wire that goes along with it too.
All i had to do was disconnect the battery, take out the airbag and plastic insert and then move the horn wire from the old harness to the new one. There is a trap door on the clip that lets you release the wire.
For installation I used 1" #10 screws from home depot. Put everything back together and took the car for a spin. Cruise worked perfectly and all for under $30.