When you view the details of a course, the price is clearly stated in the course description:
Where a course is provided free of charge to Juniper Education customers, this is indicated as FREE in the course description:
Within the Juniper Training Centre, e-learning courses for our software products are free for customers who are registered to use the product. Generally, you will have to pay to enrol in any of our other courses. Subscriptions are available that provide low-cost, whole-school access to courses in specific categories.
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