Most people who haven't done the course moan about the price and say they aren't going to learn anything. Most people who have done the course are very glad they did.
With HD brows only 20% of clients will get the shape straight away. It's not like a tint and wax where you just have to do whatever you can with the brows they have. It's a labour of love and some brows can take up to a year to grow! I usually find that 4 or 5 visits is the average to get the right shape. Some clients you have to completely change the shape of their brows and that takes a few visits.
You are buying into a brand and they spend a fortune on advertising and we could never get close to attracting that many clients. I would also say that over 90% of my HD clients are new clients and they may very well have other treatments with you.
Here is one of my clients that has been to me for a few HD brow treatments now. When she first came she literally had no tails on her brows. She now has the most amazing shape brows and says she would never have them any other way and this happens all the time. This is a before and after pic from her first visit. I must take a pic next time she is in and take a photo of how her brows are now!