Well, what is a good product for you? I have always been a big Ewen Chia fan because he mastered affiliate marketing and shows step by step on how to make commissions. Then you hear the complains on how his courses are for newbies.
Well, i dont believe in courses for advanced marketers. A great product or ebook should be one that takes you from A to Z and explains you step by step on how to build a solid recurring income online.