Update billing.md

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cc: @cwatson-cat

Author: nayef-yassin

articles/sentinel/billing.md

@@ -57,7 +57,7 @@ Microsoft Sentinel runs on Azure infrastructure that accrues costs when you depl
 
 ### How you're charged for Microsoft Sentinel
 
-Microsoft Sentinel offers flexible pricing based on the types of logs ingested into a workspace. Analytics logs typically make up most of your high security value logs. Basic logs tend to be verbose with low security value.
+Microsoft Sentinel offers flexible pricing based on the types of logs ingested into a workspace. Analytics logs typically make up most of your high security value logs. Basic logs tend to be verbose with low security value. It's important to note that billing is done per workspace on a daily basis for all log types and tiers.
 
 #### Analytics logs
 
@@ -93,7 +93,7 @@ The costs shown in the following image are for example purposes only. They're no
 
 :::image type="content" source="media/billing/sample-bill.png" alt-text="Screenshot showing the Microsoft Sentinel section of a sample Azure bill, to help you estimate costs." lightbox="media/billing/data-types.png":::
 
-Microsoft Sentinel and Log Analytics charges appear on your Azure bill as separate line items based on your selected pricing plan. If you exceed your workspace's Commitment Tier usage in a given month, the Azure bill shows one line item for the Commitment Tier with its associated fixed cost, and a separate line item for the ingestion beyond the Commitment Tier, billed at your same Commitment Tier rate.
+Microsoft Sentinel and Log Analytics charges appear on your Azure bill as separate line items based on your selected pricing plan. Since ingestion is billed on a daily basis, if your workspace exceedes its Commitment Tier usage allocation in any given day, the Azure bill shows one line item for the Commitment Tier with its associated fixed cost, and a separate line item for the ingestion beyond the Commitment Tier, billed at the same effective Commitment Tier rate. 
 
 The following tabs show how Microsoft Sentinel and Log Analytics costs appear in the **Service name** and **Meter** columns of your Azure bill depending on your pricing tier.