If you live near Hong Kong, go there to buy it retail. It's 4400 HKD.
If you want to order from the US, then all you'll need is a credit card with a US address. Then use a VPN to access the US Google Play site to make your purchase. Have it shipped to a mail forwarding service (eg, Borderlinx). Then have the mail forwarder send it to you.
That's how I got my N4.