Even the style of the way the advert is written is corny. There have been so many of these type of schemes for everything from selling cars to worm farming.
The line is usually something like this, "five years ago I was in debt and about to lose my house, then by chance I hit on a scheme which has made me rich..............."
but the bottom line is always the same, send me your money, and I will tell you how you too can do it.
I ought to write an e-book and sell it for £5. I'll bet I know more about window cleaning than him.