[SmushyTaco]

I don't think free trials by themselves are a viable solution for you or the user since you wouldn't profit and the user would only have your product for a limited amount of time. A solution could be they could get your product ad free for a week and after a week passes ads would display on your software so you could profit and in order to remove these ads the user would have to pay a one-time fee to do so. You could also provide a add-on store where other developers could make add-ons for your product and also them and you could take a cut of the profits.