I congratulate you on being privileged, but most people can't do that. Here it costs twice that, for example.

Where is here? A Nexus 4 costs twice as much in Norway as in Canada, but so does everything else.

When identical Chinese-manufactured electronics are priced differently it's usually because of import tariffs (Brazil) or vastly more generous consumer protection laws (Europe).

In Argentina, Galaxy S3 is available for 600US$ with a contract, locked.