Check the official resellers listing on the official site.
Check through a handful from your preferred region (pretty much all of them are actually based in China)
Find a few which you deem to be reasonably priced and offers reasonably priced shipping (again, most of them are coming from China)
Lastly pick one that offers your preferred payment option. (Most will only offer credit card or some obscure payment handler)
Wait for it to arrive. Simple.