Approximately $89 on ThemeForest (varies with sales). What you get:
The official Journal 3 theme is available on the Envato marketplace for a one-time fee. A single regular license covers one domain and provides access to professional support, automatic updates, and the peace of mind that comes from using legitimate, malware-free software. Considering the cost of recovering from a security breach or legal action, the price of a legitimate license is almost certainly the better investment.