How do I avoid unexpected, large charges? Kelly / Updated July 03, 2018 00:17 We let you set a cap on the maximum amount of on-demand events that you can be charged for. Related articles How do I get a purchase order (PO)? What do I need to know about migrating to a new plan? Do ignored events in the UI count towards my quota? What happens when I run out of event capacity and a grace period is triggered?