If you always wanted a robot butler to greet guests, amuse kids or be a live-action version of Cortana, you're way too late. The Pepper robot that does all that sold out exactly one minute after it went on sale in Japan on Saturday, according to manufacturer SoftBank Robotics. The company built a modest 1,000 units for its Japanese consumer launch, selling it for $1,600 with a monthly $200 fee. The 4-foot robot is not designed to fetch you drinks or do other manual work, but rather to listen, read your emotions, then respond appropriately. It can also sing, dance and tell (corny robot) jokes.