This solution won't cost much, as this would be free with the licensing from Microsoft. It would cost you the same as a server setup or dedicated VM with an AD server.
Authentication is the most fundamental component of access management and is part of security requirements in the digital world. It verifies the identity of users trying to access systems and data by validating their credentials.
I would rate the price a seven out of ten.
This solution won't cost much, as this would be free with the licensing from Microsoft. It would cost you the same as a server setup or dedicated VM with an AD server.