Advertising agencies specialize in planning, designing and producing campaigns for their client companies. They can provide businesses with in-depth knowledge of the advertising industry, as well as the creative flair to produce innovative ideas.

Costs can vary depending on the agency's reputation and experience. However, if the advertising campaign is successful in generating new business, this additional income can often offset any outlay.

Consider what you want from an advertising agency. Who are your customers? What sort of image do you want to create? What is your advertising budget? Having a good idea of what you want before you approach an agency will save time and energy.