Freja eID Pro is a great entry-level plan, both for increasing security and enhancing your user experience. Freja eID Premium adds a lot more features and flexibility.
Please note that there is no limitation of which user types you can include in the different plans. In the Pro plan, your users can be on both the Basic and the Plus level. The difference is only on which level you can make the authentication and signing requests. Freja eID is always free for the end user.
The LOA-levels (Levels Of Assurance) below refers to the NIST-standards. Note that the officially certified LOA3 level currently only is available in Sweden.