Hi Vibe Team,
To improve sales, a trial period is a great idea.
It would be cool if in the course page, under the "take this course" button, user can see a second button "try it for 3 days" or something else. When user click on this button, he could be redirect to a product page with a new price, and a new duration.
For example, if the current price is 30$ for 3 months, the trial period could be 5$ for 3 days.
I don't use recurrent payment. User should pay again after the trial period. And he shouldn't take again the trial period.
I hope you understand me.
Have a nice day,
Fred.