The licensing is unclear/vague/contradictory... I'm totally confused what the 'developer' license actually means when it says you can use it for "personal use in professional context, but not commercial." And how is a subscription for a print product handled? Do I have to burn my printed materials if I don't renew a subscription? Font vendors seem to _love_ coming up with weird snowflake licensing schemes rather than…
There are no page view limits for websites (no trackers), installation limits , epub/ebook limits, etc. Basically it is along the lines of FontSpring's worry free license and I think its even better.