Should Christians be secretive in business dealings?

Daily Word —  I am answering a question from one of our listeners. The question is, "Should Christians be secretive in business dealings?" The scenario behind this question is that this listener and their cousin are starting a Christian radio station. They want to purchase a radio commercial in an effort to learn about the process of selling radio air time and commercials. However, they don't want to reveal to the radio station the real reason behind the purchase of the commercial. They are wondering whether, as Christians, can they be secret shoppers (in a sense), or should they be transparent about their motives? Links — Sunday Services, Online Community,  Partnership