Einstein on a different BU

I’m not pretty sure and I can’t find information related on how to know if enabling Einstein on a different BU will increase the costs generated at an Enterprise level?

I know certain features when are enabled have not extra costs but others have like enabling Journey Builder for example.

The case use is really simple, Einstein exists on the PROD BU and I was thinking to run a couple of tests on the Non-Prod BU. Probably if there’s a high cost for enabling it, definitely I would consider is a waste of resources.

Thanks in advanced.

I created a case as well to inquiry with support.