I'm not sure how long 'it would last' would need to be for you to be convinced, but for me it has been going for about 6 years now since that conversation and it still works.

The interesting bit is that I was just as skeptical as you are (and probably even more so) and in the end decided that trying it was the easiest way to see if it was true or not.

The second time I was even more skeptical but then I figured 'in for a penny, in for a pound', just to be able to tell Richard that he was wrong the second time. But he wasn't.

It doesn't hurt to try though, and if it does work for you then it's free money, which is nothing to sneeze at.

Keep in mind that if your product costs you $2 to put out there per paying member and you manage to increase your sales price to $19.95 you've just gone from a 50% gross profit margin to 90%.