Review your ROI:
Tracking ROI for individual shows helps you to put data against shows so you know which shows are successful. When calculating ROI, you need to track expenses first, and also clearly mark show sales against the show itself. Depending on your sales cycle, you may be able to do a few iterations of the ROI as time elapses.
Typically, ROI from a show includes sales up to 90 days from the show close. However, you can modify this, depending on your company situation. Many CRM systems will calculate ROI for you, as you can add in expenses for a show and link a show campaign to sales. If you wish to determine this "old school", simply divide the return (net profit) by the investment (cost of show). A positive ROI is one that it greater than 1.