Based on small budgets and big box office numbers, here are the Top 10 Movies of All Time for Return on Investment:

1. Paranormal Activity

Budget = $15 thousand

Box Office = $196 million

 

2. Mad Max

Budget = $200 thousand

Box Office = $99 million

 

3. The Blair Witch Project

Budget = $600 thousand

Box Office = $248 million

 

4. El Mariachi
Budget = $7,000
Box Office = $2 million

 

5. Night of the Living Dead

Budget = $114 thousand

Box Office = $30 million

 

6. Rocky

Budget = $1 million

Box Office = $225 million

 

7. Halloween

Budget = $325 thousand

Box Office = $70 million

 

8. American Graffiti

Budget = $77 thousand

Box Office = $140 million

 

9. Clerks

Budget = $27 thousand

Box Office = $3.8 million

10. Once  
Budget = $150 thousand
Box Office = $18.9 million