Are you looking for google ads/adwords method?
I have an idea. There is a b*w forum, where people sell google ads accounts.
If we will create group of 3-4 people, we can share cost and together buy account so it will cost $15-$20 per person.
When we will get account, we will get full info how it has been created, what gmail, how much time warmed.
So for $15-$20 you will get full method. If you will have problem to get all info from account, I will help ofc
Add me