It depends which option you choose - for Jira Core specifically there are two options - Free and Standard (which starts at $10 per month for 10 users).
You can see more on Jira Core pricing and included features here
For any product you look at within the Atlassian suite, choose the pricing tab to see options for cost and included features.
See a full list of products here
Pre-receive hooks that verify the Git commit message, the modified files, and implement similar code change controls used to be requirements of large enterprises working in regulated industries only....
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