I bought a review discounted copy. I'll keep it simple for now, cos I've not implemented.
Is the method simple enough to implement? Yes.
Are there fluffs in the guide? No
Do I think I've wasted money? No
Can you scale this? Not by yourself, you'll need VAs.
Is there room for twists? Yes, I'm definitely adding mine
Will it require massive effort? Don't take my word for it, but I think it will, at least at the beginning
Do I think you can make bank with it? Definitely. It's a service people will buy. Not everyone, but then again, you don't need everyone.
I'll try out the method between this weekend and next week and post a more detailed review.