I agree, sometimes a freemium model is not viable, like in your case. And paid users are definitely more involved so they usually ask better questions if they h

I agree, sometimes a freemium model is not viable, like in your case. And paid users are definitely more involved so they usually ask better questions if they have any. Nevertheless, I believe that for a paid app, one needs good media coverage to be successful. Since there are no trials, there is not much the users can do to test the app before purchasing. (I think many people actually don't know that they can get refunds)