Geo-blocking / geo-location. How to disable or get around it?

Use an internet proxy based in the US.

If you have the money getting a private proxy service is pretty cheap and easy. Look around for US based proxy services that will filter your traffic through it's US servers and back out into the web. That way all websites will think your traffic is originating in the US.

You could investigate using a proxy server in the target country.

That would present a local IP address to the target website and should achieve what you want.