applecare in Thailand

I just moved to Thailand and I am going to buy Applecare for my 6 month old macbook bought in Canada. I understand that it is international on laptops but its recommended to buy it in the country you will most likely use it in. For me, that is Thailand as I will be staying long-term. It is much cheaper to buy on ebay but does it matter if it comes from another country? Or is it just important what country I register it in? I see one seller in Bangkok, Thailand selling it for $150 so I can buy it there if needed. I am just wondering if I should buy it from somewhere if it is cheaper or if that may lead to problems.
Thank you!