PlayStation Move, the answer from Sony for the Motion Controller is finally offcially announced at the GDC 2010. Previously the Motion Controller is named as Gem, and later Arc now the official name is Move.
PlayStation Move is going to sells in three way, bundle with PS3, standalone or the starter kit that included the PlayStation Eye, a game and the controller which cost at under $100. The price is not yet official announce by Sony yet. Since it said under $100, I assume it will be $99.