Looks great, though I can't find anything about pricing or pricing plans (looks like it's in open beta?) While I've dabbled with using jupyter for teaching pro

Looks great, though I can't find anything about pricing or pricing plans (looks like it's in open beta?) While I've dabbled with using jupyter for teaching programming to high school students, on the whole its usually too difficult to get up and running for someone who's not already moderately tech savvy. Interface is everything when starting off; this looks quite promising if the pricing is affordable for schools