I run multiple faceless Udemy accounts.
I have an account with 3k students (all premium, no free coupons or anything).
The revenue varies, but it is sometimes close to $1k per month and rarely lower than $500.
Attached is a screenshot of the earnings since August.
In addition, there are new courses ready to be published.
If you’re interested or want more information about the account (niche…), PM me.
Right now you’d already get a decent passive income, but, in addition, you can continue to publish courses to this existing audience and scale the brand much further.
P.S. There are 8 courses published and 3 other courses ready with all the lessons uploaded to be published when you want.
Also, Udemy lets you send emails to your audience, so you can promote new courses, other services, etc.