You can buy it from Awards Plugin page.
The Awards (Badges) Plugin for Vanilla Forums is now available. RC1 phase has been completed, and the plugin is available for use on your Production websites. Great care has been taken in testing it in multiple environments and configurations, and you can finally introduce Badges to your Community based on self-hosted Vanilla Forums.
As usual, plugin comes with professional support and a full year of free upgrades. To celebrate the release, plugin is now on sale for a limited time. Grab your licence before the special offer expires!