Currently we are planning to purchase JIRA server version. As I can see, that is a one-time-off fee.
But in future, when JIRA has newer versions, (e.g. JIRA 8.0, 9.0, ...), do we need to pay an additional fee if we want to do the upgrade. Is there any reference page where I can get the idea about how much I may need to pay for such an upgrade?
Same question about Confluence.