Storage trigger event

Hi fabricpribeiro,

Based on our understanding, there is no charge for monitoring a folder, as processing occurs only when an event is triggered. Given your workload, approximately 60 small files per month on F16, the impact is negligible.

Additionally, you do not need to create or manage any Eventhouse. Microsoft Fabric automatically provisions the required event infrastructure in a fully managed, serverless manner, without idle compute costs.

Additionally, kindly refer to the links below:
Fabric OneLake Events in Fabric Real-Time Hub - Microsoft Fabric | Microsoft Learn
Activator capacity consumption, usage reporting, and billing - Microsoft Fabric | Microsoft Learn

We hope the above information resolves the issue. Should you have any further queries, please feel free to contact the Microsoft Fabric community.

Thank you.