You're right, but if you had to deal with this guy, you'd be quite resentful and angry as well. I have not been avoiding him like he's been avoiding me, and I've been very prompt with replies and upfront about everything, so I'm extremely P.O.'d to say the least when he claims I sold him something defective, but doesn't seem to be pursuing for a return. I've already admitted that I could have dealt with things a little better early on, but there is no reason I should be made out to be the bad guy in all of this. I've been quite aggressive because he accused me of quite a few things even before the, what I would consider, mild insults I threw his way.
Your comments don't warrant a reply from me if they consist of ~80% insults swung at me.
I simply stated that the knife wasn't as described and didn't initially ask for a return because I thought we could come up with a resolution peacefully but you were adamant about the knife not being extremely stiff/almost impossible to open.
No one is making you out to the bad guy.