We are doing an experiment this year. We have a main interstate going into St. Louis and are putting up a billboard. We will pay $4,200 for 3 months. The anticipation is that 40k people see it each day (same people every day). We are expecting 200 leads with appx 100 sales with a cost of sale at $42 each not counting labor. With something flashy and easy to read, I think it will work. Anyone out there had experience with this type of advertising?