This system has been sold for over a thousand dollars.
It is simply a Cancellation system betting on any even chance you pick!
You start with the string: 0 1 2 3 4
You then bet the sum of the first and last numbers. If you win, you cross them off. If you lose you add that loss to the string. If your even chance loses twice in a row, you pause betting and wait for a "paper win".
Bulletproof my ass!
Its also available for for just £8.00 according to DTH.
But don't mention too much, or else the posts start to melt into the pages!