Analysis of information sources in references of the Wikipedia article "List of highest-grossing superhero films" in English language version.
By the late 1970s, Godzilla films settled down to a comfortable formula. Toho was making two films a year. Each cost in the neighborhood of $1.2 million and could be counted on to earn about $20 million.
Godzilla is Japan's greatest and most popular screen monster: a 400-foot tall prehistorical reptile. He has become a legend in his time. In thirteen film appearances to date he has grossed over $130 million outside Japan; the Japanese domestic grosses swell that sum vastly. [...] The beast's most recent screen appearance — this time in a speaking role—was in Godzilla vs. Megalon (1973) in which he and a man-made robot defeat Megalon and its ally, Gigan.
Superman has been featured in a full-length movie in 1978. It grossed $260 million worldwide to date.
China's national average price for a movie ticket is about 20 yuan ($2.40).
Average urban ticket price 2004 – 20 CNY
He is still going strong after starring in 13 movies that have brought his maker $130 million in foreign exchange.
