You need not to be a Jira user to purchase a Jira app. Anyone can log in to Atlassian marketplace.
Search for Automated Release Notes
Once logged in, search for Automated Release Notes on the Atlassian Marketplace and click on Automated Release Notes in-app listing. Check app pricing on this page if not checked.
Click on Buy now option for Jira Server.
Search or add correct Jira tier
You will be navigated to the page where you will have three options to select your Jira tier. Add to cart and checkout.
To directly navigate to this page, you can also log in and search for Automated Release Notes and select tier to continue your purchase from this link: https://www.atlassian.com/purchase.
Automated Release Notes server version has to be purchased for minimum 12 months. (If you want you can also purchase it for 24 months or 36 months). Automated Release Notes server licenses are perpetual licenses, meaning once purchased you can keep using the product without renewing the license. But the license renewal is necessary if upgrades & support is desired. Given price includes one year (or the duration you selected) of support and services with all product updates. From one year onwards, if you wish to continue with Automated Release Notes, you will be charged 50% of the base price which includes support and services with all product updates until the next expiry date.
You can upgrade the tier of your host product and add-on licenses at any time. Upgrade prices are calculated based on Atlassian’s formula (view example).
Add your details
After selecting the relevant Jira user tier, add to cart option will be available, click on that and add further details. (Refer image below)
If you wish, you can skip adding separate billing and technical contact, however, it is recommended to add these contacts so we can inform you on new releases or any important updates via email.
Then Click on continue.
Now you'd be brought to the payment page, select the appropriate payment mode and make the payment.
Once the payment is successfully done, you will receive your Automated Release Notes license via email.
Payment via Purchase order (PO)
As per Atlassian's policy, Atlassian only accepts PO number as a reference on a quote or invoice for your internal tracking and record keeping. However, Atlassian does not accept purchase orders as a form of payment nor the terms and conditions commonly associated with purchase orders. Atlassian provides fully functional evaluation licenses for you to use while payment is being arranged. Atlassian accepts payment only by bank transfer, mailed check, and credit card; full details are on the first page of a quote or invoice. Once full payment is received, Atlassian team issues the license keys and email the nominated billing and technical contacts. Let us see how to add PO number in your invoices.
Adding a PO number to a new Quote
Create a new Quote by following above steps.
On the last screen, under payment details, check the 'Add PO number' checkbox and type the number in the new text box.
Adding a PO number to a new Quote
If you already have saved a quote it can be viewed and updated with a PO number from 'orders' tab in your Atlassian account.
Click on orders tab.
Click on quotes tab.
Then click on update PO #.
Update the PO number in the given pop-up & save it.