Hi @Patrik Jakus ,
You can check the product licensing and price under O365 Purchase services and it is listed as a standalone product.
However if you have more queries the best approach is to contact sales and billing team over here -
https://azure.microsoft.com/en-in/support/legal/sla/active-directory/v1_1/#:~:text=Azure%20Active%20Directory%20Premium if this doesnt help you can contact our billing team for more details.
Feel free to have a call with the billing team for further questions around this, through. https://azure.microsoft.com/en-us/contact/#contact-sales
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