It really depends who you'd use to ship it, what options you'd go with for shipping, where it is going to be shipped (and what fees and rules they might have in relation that), and other considerations of that nature.
You still need to make sure it's unlocked and compatible with the frequency bands used by the local networks. The mobile phone market is different in the US and not all phones are necessarily sim free and unlocked. Also different models have different combinations of frequency bands. It's not as simple as just buying the phone from where ever.