Question about buying US PSN Cards on Amazon from outside of US.

I am from India .Amazon says these cards are for US customers only. I have come up with 2 ideas .(1)Use the address given by Borderlinx at the checkout using a VPN (2) Buy an e-gift card from Amazon ,mail it to myself,redeem it and use it to buy the psn card from that .------------- Any idea on which one of these can work.