
At the end of the month you know which code filled which evening, what it cost you and what it took. Then you decide whether to run it again.
You will not find an "estimated ROI" on this screen. An estimated return is built by assuming what the guest would have spent, and at that point the number says whatever you want it to. If a coupon has no redemptions yet, the panel tells you it has no redemptions. We prefer an empty field to a number that makes you decide badly.