I regularly receive inquiries whether the MPG Pro Workstation or MPG Pro Laptop can be shipped overseas. The answer is “yes”— to most countries. Buyers are responsible for any custom fees, taxes, and shipping costs overseas. Buy the Mac at a USA vendor, have it shipped to OWC for the upgrade, then it gets shipped pre-tested and ready to use to you.
Overseas (non USA) buyers should be sure to purchase AppleCare, which makes the warranty worldwide. See the Applecare Terms and Conditions for your particular country (Apple does not support in every country), and the descriptive information in the Apple Store about Applecare.