Tvad, my point is because people are in most cases reluctant to return something they purchase, or they either don't get around to returning it or don't want to bother... I regret it if you read it as a pointed attempt to dissuade, as I'm aware of the people you mentioned and many others. My post encouraged home trials before money changes hands, a preference...this is different from money back guarantees, which also are very appropriate, although you may see them as the same.
Brian
Brian