BrightCourse is a subscription-based service, so the cost depends on what you choose to license during registration. The first month is FREE when you sign up at BrightCourse.com, which allows you to try the program for a month without cost or obligation.
Subscriptions are based on concurrent stream counts. This means that you can have as many users as you need on the account but only a certain number can be streaming at the exact same time. In addition, classroom viewing rights are included, and the worksheets can be duplicated and shared as often as needed.