I sometimes buy products that I have doubts about if the product includes a money back guarantee. As much as I pride myself on awareness of manipulation techniques, advertising works on me just like it works on you.

In hindsight, I can scarcely think of a time that I asked for and got a refund. Either the products were good enough or I avoided the difficult process of seeking a refund. Is this why guarantees work so well? They persuade people to act and it is a rare person who follows though on the guarantee.

Do money back guarantees persuade you to buy? Have you ever successfully got your money back?