Advertisers spend a considerable amount of time and resources testing out how psychology and images work together peoples spending habits. One company selling hair products found out that generally, women want a sense of sexual reassurance: a message more powerful than the "Get your man" theme they were using. Once changed their image from a man smelling a woman's hair to an image of a woman looking at herself in a mirror...sales doubled over two years. This play of vanity and narcissism was just the thing they needed to boost sales.
A small simple change of image may be just the thing you need to stimulate your revenue.