Creating an accurate trade show budget that allows you to achieve forecasted ROI takes a bit of practice and experience. It's easy to overlook small expenditures that can quickly erode your budget forecast. In addition, unexpected costs often surface on-site due to shipping damages or a forgotten item (our Checklist for a Successful Trade Show is a helpful reminder resource). This is part of the trade show package. You have to anticipate it. Further complicating the process is the time-consuming and number-crunching that is predicting lead levels and conversions via historical data. Very tricky.