Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
I understand that you would like to know about the pricing for Azure WAF Policy if you enable Bot Protection.
Azure WAF Bot protection does not incur additional cost.
You will be charged for the WAF SKU App gateway only.
Refer : Web Application Firewall pricing
Also, no additional cost for using WAF Policies
Understanding how Pricing is calculated for App Gateway V2 SKUs : https://learn.microsoft.com/en-us/azure/application-gateway/understanding-pricing#v2-skus
Should there be any follow-up questions or concerns, please let us know and we shall try to address them.
Thanks,
Kapil
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