You are a stranger, probably from another country, how can I prosecute you if you scam me my bitcoin?
If there's a trusted escrow in your area maybe you can ship or hand-drop the card to him, otherwise you are like a person approaching me at the station and saying " look me, I have a rolex! So loan me 250 usd, I will return 5% more in 1 week!"
your right.. i have changed my strategy to coin purchase... if anyone'd like to help my cause at less risk: https://bitcointalksearch.org/topic/wtb-15-btc-with-paypalgoogle-wallet-edit-i-can-also-purchase-amazon-cards-1071619