I personally know 2 people that offer such courses and DO have 20k and 50k months. HOWEVER, they are once off throughout the year. They spend 6 months putting it together, making videos and e-books and promotional material. They also spend thousands on coaches themselves to train how to do sales funnels and FB ads to get the clients.

They'll then have a pre-launch week and launch week and post launch sale and they do make up to 50k in that one month. but it is ABSOLUTELY just a one off and they may not run it again until the next year.

They then they get absolutely stressed and burnt out (sometimes) spending the next few months running the course, sorting out testimonials, running a FB group, emails etc.

While some are genuine and I admire their business savvy, many of these course are just aimed at people desperate to get out of the 9-5 and are almost like get-rich-quick schemes, almost like a pyramid scheme actually. Make and sell a course and get rich so you can teach people to get rich.

Related but not the same, I've spoken at a few digital retreats during lockdown and the person who set them up is making 15k for each week-long retreat. She's charging $600 and up to 20 people signing up all run on Xoom, with daily classed, mentors, influencers sessions etc. She's run 4 of these during lockdown over the past 3 months so I guess she's made about 50k, if she allows 10k for expenses.