Just like the best tricks in magic, the effect is a simple one: a soon-to-be-stunned spectator gives you a number from 1-100. You remove all the change from your pocket and the total matches exactly!
“Exact Change” by Gregory Wilson is easy to do. You start clean, end clean, can turn your pocket inside out or (if you’re cheeky enough) have a spectator reach in for the outcome herself. This is a really great, self-contained effect that many professional performers are using. It resets instantly, uses no palming, no forces, special tailoring, or anything like that. It’s a genuine anytime, anywhere miracle.