See what happens when you show up to party fashionably late. There was a transaction. He got his knife, I got mine. Both parties agreed that the trade knives met the described condition. So to answer your question, YES " he can leave feedback". FOR THE RECORD, I did'nt say that I was going to leave NEGATIVE feedback. Post that Email?? The one that said hey, you got your knife I got mine how would you like to handle feedback? Where is the threat? The real issue with this transaction was the LIE before either one of us got our knives. Remember, I asked.....Hey SnowCrash, that knife that you posted for trade ... is that the same one that I am shipping to you ( ZT 0551 Elmax ). SnowCrash's response was no ...... it was a TYPO. Said he meant to type ZT0550, you know the one with the S30V steel. I asked, S30V? they are S35V on that particular model. SnowCrash said ehh it's all the same to me. I wasnt done typing the second email, he closed the thread. Lie after lie. So I asked to cancel the deal because the constant lies. This is EXACTLY how this went. The argueing came well after he said he would'nt cancel the deal and that he just made a mistake. I said it before and I will say it again LYING is not a mistake.