Reza Rad has a guide for the perplexed when it comes to licensing Power BI:
The pricing table above may scare you off and you may immediately think of not going through the embedded path. However, I need to let you know that there are some scenarios which Power BI Embedded can be a much more cost-effective option than Pro. Here is an example:
Assume that you have 100 users for your Power BI solution. And your users are not connecting all at the same time to use Power BI reports. You may have the maximum of 300 page renders per hour for them if you use embedded. In such case, embedded for that scenario would cost you about $700 USD per month, where the Power BI Pro for 100 users would be $1000 USD per month. This means saving of $3,600 USD per year. This is an example scenario that Power BI Embedded can be more cost-effective than Pro.
Give this a careful reading if you’re looking to implement Power BI in your environment.