I guarantee that it works. You can't convinvce me it wouldn't work. If you want to buy PM me
No escrow
That there is the key to it being a scam. If this method is so sure, then surely you would deal with reputable escrow and have the money held until earnings are proven. The escrow would decide when that happens and release the money. Good luck trying to find someone that is willing to part with $100.00 without using escrow.