Optimus Popularis Keyboard is world’s most expensive keyboard, because the price is (only) $1000. So, why Optimus Popularis Keyboard has a very expensive price? In this keyboard, there is an OLED screen between the FN button with other buttons and the OLED screen display some information like an additional display such as weather info, stock charts, emails and more. Interested? You have to be patient, becauseOptimus Popularis Keyboard available in market in the beginning of 2011.