Commercial pay for view services, such as Amazon Prime, Netflix and Hulu, often restrict the use of their services to personal use only. Under fair use, this would prohibit the streaming of this content in the classroom.
However, it does not prohibit the assignment of such material to watch through personal accounts outside of the classroom. As with all online material, accessibility issues and cost to the student(s) should be considered.
These sites allow you to quickly determine where content may be available.