...
You must purchase the app license that matches the highest Jira application or exceeds your highest Jira user tier. For example, if you have a 500-User Jira Software license, and a 20-Agent Jira Service Desk license, your Jira apps must be at the 500-User level.
🔎 For more pricing information, please go to check Atlassian Purchasing&Licensing. You can find actual app pricing on our Marketplace page here!.
...
How are license upgrade prices calculated?
...