I have been marketing products online for a while now and I have NEVER seen a system this good. In taking a good hard look at the product:
1. It's real and as the previous response posted, GRN is competing against much higher priced product which makes it an easy sell
2. The marketing system behind it is incredible. What they do for you in the marketing process is a huge time saver.
It's not a guaranteed win for you though. You must put effort in.
What you must do is drive visitors to your link. That's where the effort comes in.
I joined the Fly on the Wall Club to learn how to drive traffic to my websites but if you already know how to drive lots of traffic then the reverse funnel is great but if you don't know how to get the traffic then you will need to learn how first.