 It continued rising to $500 million in October 1987, $560 million in January 1988, and $650 million in March 1988.By June 1991 the projected cost had increased to $1 billion, but in that month it was decreased to between $500 million and $750 million.However, by November 1994, about a year before the grand opening, the cost was expected to be only $325 million.