User Access & Management

I’ve got a potential client that wants to upload videos to a website for registered and paid subscribers to view. I figure the cheapest way for him to do this is set up a blog that he can post these videos to, and have a paypal button to purchase access to watch the games. I guess i am looking for plugins that have a user management system that would allow the owner to manually go through and give certain users access to these video posts. Any ideas?