You can purchase a course of 6 classes for £30 (£5 per class). A new class will be released each week for 6 weeks but you then have 8 weeks to complete the course in case you need a bit of time to catch up.
After the 8 weeks, access to that course will end unless you re-book and sign up for the next course. If you sign up to the next course, you will be able to access all the classes in the previous course as well as the classes on the new course.
While enrolled in the courses you can do the classes as many times as you like which makes the classes excellent value for money and really convenient to fit into a busy schedule.