I have a question...how can we all be successful if we are all selling widgets???? Is it because some are selling Acme and other BrandX? Or because some are blue and others are purple?
IMO, it's all about branding and perceived value.
Many of us are all selling SEO services. And yet some are busier than others.
Companies like the scammer in question in this thread are probably very busy because of the perceived value they offer. They charge very little, they claim to give you a lot for your money, and not only that -- you can get your money back (supposedly) if you do not get what they say you will get.
They make it appear as if there's no risk involved to use their service. Which may or may not be true. Who knows? Maybe they're great SEOs and are not pulling the wool over anyone's eyes.
I'm thinking of anonymously testing them out one of these days. Anyone have a site they want "optimized" that they don't mind risking?