Not getting involved in all the various VPN and IP spoofing stuff then this is rather useless in Australia with nothing much beyond Netflix and Youtube. Yes, you can fake a location and register in the US but then the stick knows it is not there and won't let you use app after app. If you want Amazon Prime and Netflix a simple Fire Stick is much better value.
The device works well for apps that don't have geofencing. The Roku website doesn't tell you which market you are in (I was using a web proxy based in the US) but fails to install many of the apps. There's no way to see what country you belong to and which apps are geofenced.