At E3, Sony revealed that the PlayStation 4 will be available this holiday with a starting price price of $399. The $399 price will get you the console, a DualShock 4 controller, HDMI cable, power cable, USB cable, and a mono headset.
To get your hands on a PlayStation Eye and an additional controller, you will have to open up your wallet. The DualShock 4 and PlayStation Eye costs $59 each.
The PlayStation Eye is a digital camera device that is similar to a webcam. It uses computer vision and gesture recognition to process the images taken by the camera.