The cost of Leverice license depends on the number of the paid users and the duration of the license. Thus, when deciding to use Leverice as your corporate messenger, you should consider the number of unique users.
More details on what is meant by a "unique user" below.
A unique user is a Leverice user with a unique email address who is invited to and has joined a workspace/workspaces. It means, that one user (with the same email address) can be invited to an unlimited number of workspaces you've created.
Information about the number of the paid unique users and the unique users who have already joined your workspace(s) can be found in the lower right corner of your Leverice client, where other detailed information about you tariff is displayed.