Trade fairs often involve a considerable marketing investment by participating companies. Costs include space rental, design and construction of trade show displays, telecommunications and networking, travel, accommodation, and promotional literature and items to give away to attendees. In addition, costs are incurred at the show for services such as electrical, booth cleaning, Internet services, and material handling. If your company has never exhibited at a trade show before, budgeting for these costs may well be a shot in the dark, but they can add up to a considerable percentage of the overall marketing expenditure.