Hi Danny,
Thanks for reaching out–happy to clarify this for you! Our import tiers for Event Aggregator refer to the number of import tasks that can be scheduled in a given day. There is no limit on the number of events that can be imported in each task! For example, you could use the 100-imports-per-day tier to import any number of events from across 10 separate sites, 1-10 times per day. However, if you tried to import from those same 10 sites once every hour in the day, you’d hit your limit before completing a day’s worth of 120 import tasks. This Knowledgebase article provides more details on how imports count against your daily limits:
https://theeventscalendar.com/knowledgebase/event-aggregators-import-limits-work/
I hope that helps! Let me know if you should have any lingering questions after giving our documentation a look over! 🙂 Cheers, and thanks again!