"The Chronicles of Narnia: Prince Caspian is expected to draw sold-out crowds when it opens Friday. Early estimates suggest the film will be one of the summer's top earners. Jeff Bock, a box office analyst at Exhibitor Relations, said Tuesday that the film could top $750 million in worldwide ticket sales. He expects a strong opening because of the success of the franchise's earlier film and relatively weak competition this weekend. Bock also points to the film's ability to draw entire families."
And that doesn't count DVDs or merchandise spin-offs!