Their sign up page really says it all:
7-day FREE trial
Membership priced per family (not per child)
Live lessons Mon-Thurs
Clubs on Fridays
Hundreds of lessons on replay
Curated resources for extended learning
Spirit Weeks throughout the year
Customizable learning profiles
Social groups for kids
There are 25 Courses, but I saw somewhere that there are over 600 lessons also there are at least 5 courses that will be starting up this year (2023).