<i>&gt; When you visit a restaurant do you get a refund if you don&#x27;t like the food? Or a theater?</i><p>Weeeell, some people do exactly that (and have done since the beginning of time, as popularized in folk songs). The iOS AppStore does that, and that&#x27;s also &quot;pennies&quot;. Amazon does that. It&#x27;s no small part of their success.<p>It&#x27;s a question of self-belief. A seller who is confident about the quality of his delivery will not mind guaranteeing refunds, because chances are that very few people will take him up on it. Considering your costs are pretty much the same whether you serve 10,000 or 1,000 webpages, it doesn&#x27;t really matter if you get 9,995 or 995 refunds.