What happened:Seller listed $10 amazon gc for $6, I was sent used GC codes.  

The sellers profile: https://bitcointalk.org/index.php?action=profile;u=1090688

The sellers post: https://bitcointalk.org/index.php?topic=2367129

I paid $6usd using BTC.

I only have the selly.gg conformation ID.

Just read the thread, he now says his bitcointalk account was hacked. lol. Lesson, learned always use escrow.