Should I post the screenshots from Amazon where they have ALREADY removed the balance from my account, or how about the email from the wonderful support team informing me that the card is invalid?
Look - if it were a valid code that I could use i'd pay for it in a heartbeat. I'm sorry that it happened man, but sometimes with transactions like this no one comes out a winner.
Glad you didn't get screwed by this guy. Surprised? I think not. Anyone who has gathered up $30,000 in $300 Amazon codes and is selling them here rather than where they can easily be sold for 90%+ on the dollar is obviously either scamming or is stupid enough to have bought them from someone else who told him they were legit just like he is doing. Dumb and dumber. (Not you, the seller and his source).
As you found out, Amazon will shut you down in a hearbeat plus charge it back to ANY credit card you have already used on your account even it you removed it if you manage to use it to buy something.