The site does look interesting but the pieces all seem pretty advanced to me (grade 7+ ?), I wonder what their strategy is in this regard as it would reduce their appeal to the wider CG average hobby player and hence reduce their chance of making money when it goes subscription.
I think the site could be better designed as well, it should just show you part 1 of each video and then when you select this you then see a playlist of parts 1 to 5 for your selection. It currently just seems to randomly show a list of videos in no particular order. Would be good to have an alphabetical list of pieces.