The essence of the idea:

1) You need to make a lead magnet, or a video lesson, or an auto marathon
Give some very very useful content

2) Further, the transfer of content should be without your live participation, recorded once, then it works automatically, you cloned yourself, pulled out the expertise

3) It should be paid, but equal to or slightly less than the cost of attracting a client.

For example,
The cost of the marathon is 500 rubles and we set a KPI for targetologists, which is the extreme cost for attracting the 1st person 500 rubles.
That is, if you spent 10,000 rubles on advertising, then divide 10,000 by 500 rubles and get 20 customers. Then you will pay off this funnel at 0
Or if you spent 10,000 rubles and only 10 clients came, then the cost of attracting one client will be
10,000 / 10 = 1000 rubles
Then you have recouped this funnel by 50%

4) If there is an auto marathon, then for example the first couple of days are good, and the last day should sell your consultations, or training.
Man about