Decent opening weekend box office gross for Red Tails: $19 million. The production cost was $58 million (plus another $20-30 million in promotion/advertising).
As a general rule, films that have an opening weekend box office greater than 30% of the production cost end up making a profit over the long run.
http://boxofficemojo.com/weekend/chart/
As a general rule, films that have an opening weekend box office greater than 30% of the production cost end up making a profit over the long run.
http://boxofficemojo.com/weekend/chart/
