 It is perhaps the most commercially successful film Hollywood produced in the 1970s starring a predominantly black cast.Produced on a budget of $1.2 million, it earned $5.2 million in theatrical rentals during its North American release, making it the 22nd highest-grossing film of 1970.The film was released to DVD by 20th Century Fox Home Entertainment (acting as distributor for MGM Home Entertainment) January 9, 2001.