I am not quite sure if I understand the reasoning behind your desire to get an iPhone someplace outside of the US. Though I will give a shot at answering this question best I can.

I think the only reason I would get an iPhone outside of my home country (which if the question is just are they available in other countries, then yes they are, check the Apple website for specifics), would be if I wanted to get the factory unlocked version at full retail price which is only available in certain countries (ie not the US). If you buy an iPhone abroad locked to another network you are usually stuck in a contract, the price of the actual phone may not be such a deal in the end because of FX rates, and it will be locked to a provider in another country until an unlock comes out.