What should I do?

Having just lost $500. myself on an unusable part, I feel for ya. We like to think that we are all in this site because we like Mopars, and to help each other. So we trust someone to his or her word. I've said this before, I will say it again, a crooked seller can show you 20 pictures of a part, but it doesn't mean that you are going to get that part. After looking over all of the previous posts here, I still get the feeling that the buyer is getting the blame, not the crooked seller. Why is that? I know this because I too got blame. It's happened to me twice. If you can not trust a man for his word, his word means nothing.