Pepper is a humanoid robot by Aldebaran Robotics and SoftBank Mobile. They are currently on display at a few special Softbank stores in Tokyo.
Pepper will go on sale in Japan in 2015 with a price tag of around US$2000 dollars. This is a lot of money for a household gadget, but amazingly cheap for high-tech robotics. It is a fraction of the price of Paro the robotic seal or Aibo the robotic dog.
My guess is that there will be some kind of obligatory monthly wifi contract you need to sign up for when purchasing Pepper. This would provide updates for the robot and be the main source of income for Softbank.