Do DVD and Blu-Ray sales count toward how much money a movie has made or is it just box office sales?

For example, The Dark Knight has made just over billion. Does that include just the domestic+international box office money from tickets or DVD and Blu-Ray sales as well?

Related posts:

1. How To Find Cheap Flights In South Africa
2. Sharp FO 5800 – Working To Help Save You Money
3. Which VOIP service is the best value for money and the best service?
4. Avoiding spending money on auto repairs
5. Sharp NX 670 – A Perfect Way To Help The Home Office