The JetBrains price is the international price, they don't have a regional price as Adobe.
Guess should have been clear that the JB price is because I've been a subscriber for years now, still the reason for that if that they offer a lot of bang for those bucks.
> I do feel it is a bit hard to nail the best pricing model that works for everyone
I understand the reason for going with a subscription model, but in your case I think that works for you only, not for your users.