Thanks. vouch for ritchynator0.
The method is known, but I don't think this exact method is used.. I've watched a lot of money making videos, and saw a lot using this method, but the guide tells you something extra - which I've never seen before.
EDIT: Email sent, guide read through.. Final word: Great method. It is somewhat known but does include a nice additive. Definitely worth the small price of $2.