These prices are valid only for USA and for a two year plan. Apple currently refuses to sell a network unlocked iPhone 5 in USA. iPhone 5 is being listed for sale on various online auction sites from Europe for prices between 800 and 1400 EUR (price without contract obligation). None of these sites is directly affiliated with Apple and thus buying an iPhone from any of these sites poses a great risk.
Apple listed the price for iPhone 5 without contract on its official site in London and in Germany. For 679 EUR you can buy the 16GB iPhone 5 and for 899 EUR you can buy the 64GB iPhone 5 smart phone.