Update compliance estimated cost

lalanc01 Update compliance should be free so long as you meet the pre-requisites: Get started with Update Compliance - Windows Deployment | Microsoft Docs. 

Update Compliance prerequisites

Before you begin the process to add Update Compliance to your Azure subscription, first ensure you can meet the prerequisites:

1. Compatible Operating Systems and Editions: Update Compliance works only with Windows 10 Professional, Education, and Enterprise editions. Update Compliance supports both the typical Windows 10 Enterprise edition, as well as Windows 10 Enterprise multi-session. Update Compliance only provides data for the standard Desktop Windows 10 version and is not currently compatible with Windows Server, Surface Hub, IoT, etc.
2. Compatible Windows 10 Servicing Channels: Update Compliance supports Windows 10 devices on the Semi-Annual Channel (SAC) and the Long-term Servicing Channel (LTSC). Update Compliance counts Windows Insider Preview (WIP) devices, but does not currently provide detailed deployment insights for them.
3. Diagnostic data requirements: Update Compliance requires devices be configured to send diagnostic data at Required level (previously Basic). To learn more about what's included in different diagnostic levels, see Diagnostics, feedback, and privacy in Windows 10.
4. Data transmission requirements: Devices must be able to contact specific endpoints required to authenticate and send diagnostic data. These are enumerated in detail at Configuring Devices for Update Compliance manually.
5. Showing Device Names in Update Compliance: For Windows 10 1803+, device names will not appear in Update Compliance unless you individually opt-in devices via policy. The steps to accomplish this is outlined in Configuring Devices for Update Compliance.