How effective is the Countdown Deal Method on Udemy?

Hi Everyone,

I launched a new course on Udemy. It is called: English Grammar Writing Crash Course In One Hour. I designed this course basically for working adults who are going back to college after being out for a number of years. It is also for those working adults who are already in college but are not getting high grades due to grammar mistakes.

I have a very small email base and a very small social media base. 99% of my sales come from students already on Udemy's platform. For this new class, I decided to do a countdown in which I will raise the price every three days until Sep 7th. I put the countdown information in the beginning of the class description. I also posted it on my social media platforms. I will update the countdown every time the price increases. I published this class for free and within 48hrs I had over 500 students. Now, I am curious to know can I generate sales and what price point works the best.

Yes, I have tried various other marketing techniques recommended by Udemy and others with almost no direct sales. I got this idea from listening to Michael Stelzner marketing one of his upcoming events.

This question is for those you who have small email and social base. What marketing techniques seems to work best for you?

Here is a link to my class: https://www.udemy.com/plan2win_grammar/