 The poor results exacerbated disagreements between Trump and Harrah's, leading to Trump buying out Harrah's interest in the property for $70 million in May 1986.In 1989, Trump paid $62 million to purchase the neighboring, unfinished Penthouse Boardwalk Hotel and Casino, including a hotel tower that had formerly been a Holiday Inn, and a nearby parking lot.Trump planned to expand the Plaza onto the Penthouse site.