As for the price, I do agree on the jump between free and paid, but I also think that there's nothing actually similar to lofi.co around. The timer for one, even though it looks like a simple pomodoro timer, it's actually a lot more advanced than that and the only platform I know offering something slightly similar has only that as a product and charges double our monthly fee. Again it's hard to think of lowering the price when the competition is charging netflix-level monthly fees or other similar companies still higher fees for a fraction of the features.
May I ask what you mean with 'enough value to be ad supported'? I don't really like to share revenue online, but I can say the platform is profitable and has been growing steadily since launch.