I just bought it. The UX of the purchasing process was smooth like butter, with minimal amount of clicks, even with a link to your gmail with a magic search to find the confirmation mail. Pretty nice.

My honest opinion is that I'm a little disappointed with the content of the course itself, I feel like it's way too basic and offers too little insight as of now. But maybe more sections will be added later?

Maybe I missed it, but I haven't seen any explanation of VIM's combination of verb and nouns? I think thats the most important part to understand when learning VIM.

Anyway, very cool product and a nice experience.