This is a great idea for spending your eftpos giftcards for every cent you have on it.... when it works. Amazon security is very strict. They have the power to cancel your order even if you call them to verify you are aware of the purchase.
I got one of my accounts locked and have no way to unlock it or verify my gift card because I received it from work without an invoice/receipt. No way to contact a amazon consultant so I made a new account