Update pronunciation-assessment-tool.md

Author: sally-baolian

articles/cognitive-services/Speech-Service/pronunciation-assessment-tool.md

@@ -24,6 +24,11 @@ Pronunciation assessment provides various assessment results in different granul
 
 This article describes how to use the pronunciation assessment tool through the [Speech Studio](https://speech.microsoft.com). You can get immediate feedback on the accuracy and fluency of your speech without writing any code. For information about how to integrate pronunciation assessment in your speech applications, see [How to use pronunciation assessment](how-to-pronunciation-assessment.md).
 
+> [!NOTE]
+> Usage of pronunciation assessment is charged the same as standard Speech to Text [pricing](https://azure.microsoft.com/pricing/details/cognitive-services/speech-services).
+> 
+> For information about availability of pronunciation assessment, see [supported languages](language-support.md?tabs=pronunciation-assessment) and [available regions](regions.md#speech-service).
+
 ## Try out pronunciation assessment
 
 You can explore and try out pronunciation assessment even without signing in.