May I kindly request to help me!

  Hi buddy! I'm from Myanmar. I'm only a medical student. I wanna buy black I phone 3G S 32 Gb. Do u know there's no authorized dealer of i phone in Myanmar. Mobile shops buy iphone 3G S from Hong Kong and then resell it in Myanmar. They said that iphone 3G S from Hong Kong is officially unlocked. Is it true? I'm afraid to buy it. How can i check that  iphone 3G S to make sure officially unlocked? Please help me. Please post how to check iphone 3G S officially unlocked? I'm afraid because the price of iphone 3G S is so high in Myanmar. The price of black iphone 3G S 32 Gb officially unlocked  is about $ 1100.