skepticism

Prospects buy from you because they want to enjoy the benefits produced by your product or service. Their desire for those benefits makes them want to believe everything you tell them. But skepticism makes them reluctant to buy. When their skepticism is greater than their desire -- you lose the sale.

When making a purchasing decision, people have their "rip off radars" on high beam. They're wary and so they should be -- after all, they're about to spend money so they want to be sure they're not going to get ripped off, AND they want to be sure they're going to get the absolute best return on their advertising dollar.