@korina Usually a one-time fee is for a permanent license, in my experience. Your one time fee for one year is about 50% more than a subscription for the same time period. How would a user benefit from buying the one year, one time, license? I see big potential for customer confusion.
You have a great product, but for my current needs, the subscription price is a bit excessive for me.
I would certainly be interested if you had a permanent license price. I understand that you may have a recurring cost for getting source data, so perhaps you could have a version where the other weather models require a subscription.