What happened:: Electronics4BTC advertised he had various GCs for sale including Amazon and his account is 3 years old. Another user posted a report of sucessfully bought a $100 amazon from him. I then purchased an $100 amazon gc for $50, then the seller said he only had two $200 amazon GC's in stock, but no $100 GC. He said he can refund or I can send him an addition $40 for a $200 instead. I sent him an additional $40, then the seller closed the thread and erased his advertisement and stopped responding to my PM's.