Update pricing.md

Author: dbasantes

articles/communication-services/concepts/pricing.md

@@ -105,33 +105,46 @@ Note: USA mixed rates to `+1-425` is $0.013. Refer to the following link for det
 
 ## Call Recording
 
-Azure Communication Services allows customers to record PSTN, WebRTC, Conference, SIP Interface calls. Currently Call Recording supports mixed audio+video MP4 and mixed audio-only MP3/WAV output formats. Call Recording SDKs are available for Java and C#. Refer to [this page to learn more](../quickstarts/voice-video-calling/call-recording-sample.md).
+Azure Communication Services allow developers to record PSTN, WebRTC, Conference, or SIP calls. Call Recording supports mixed video MP4, mixed audio MP3/WAV, and unmixed audio WAV output formats. Call Recording SDKs are available for Java and C#. To learn more view Call Recording [concepts](./voice-video-calling/call-recording.md) and [quickstart](../quickstarts/voice-video-calling/get-started-call-recording.md).
 
 ### Price
 
-You're charged $0.01/min for mixed audio+video format and $0.002/min for mixed audio-only.
+- Mixed video (audio+video): $0.01/min
+- Mixed audio: $0.002/min
+- Unmixed audio: $0.0012/participant/min
 
-### Pricing example: Record a call in a mixed audio+video format
+
+### Pricing example: Record a video call
 
 Alice made a group call with her colleagues, Bob and Charlie. 
 
-- The call lasts a total of 60 minutes. And recording was active during 60 minutes.
+- The call lasts a total of 60 minutes and recording was active during 60 minutes.
 - Bob stayed in a call for 30 minutes and Alice and Charlie for 60 minutes.
 
 **Cost calculations**
-- You'll be charged the length of the meeting. (Length of the meeting is the timeline between user starts a recording and either explicitly stops or when there's no one left in a meeting).
+- You'll be charged for the length of the meeting. (Length of the meeting is the timeline between user starts a recording and either explicitly stops or when there's no one left in a meeting).
 - 60 minutes x $0.01 per recording per minute = $0.6
 
-### Pricing example: Record a call in a mixed audio+only format
+### Pricing example: Record an audio call in a mixed format
 
 Alice starts a call with Jane. 
 
 - The call lasts a total of 60 minutes. The recording lasted for 45 minutes.
 
 **Cost calculations**
-- You'll be charged the length of the recording. 
+- You'll be charged for the length of the recording. 
 - 45 minutes x $0.002 per recording per minute = $0.09
 
+### Pricing example: Record an audio call in an unmixed format
+
+Bob starts a call with his financial advisor, Charlie. 
+
+- The call lasts a total of 60 minutes. The recording lasted for 50 minutes.
+
+**Cost calculations**
+- You'll be charged for the length of the recording per participant. 
+- 50 minutes x $0.0012 x 2 per recording per participant per minute = $0.12
+
 ## Chat
 
 With Communication Services you can enhance your application with the ability to send and receive chat messages between two or more users. Chat SDKs are available for JavaScript, .NET, Python, and Java. Refer to [this page to learn about SDKs](./sdk-options.md)