Thanks for all the support guys
I don't have reason to think these had been installed before. There are no signs that would lead me to think so. The headers were shipped in the original box. The box doesn't look to be what I would call in bad condition. It does look like it traveled from Summit to Texas, and from Texas to Idaho though. Like I said in my original post. These headers were in the box along with the bag of collectors and a set of gaskets....and absolutely nothing to protect the headers from banging on each other. This in my opinion is what caused this damaged. I could expect a little scuffing, but this is completely unacceptable.
I think I will send the seller a PM with a link to this thread, and see what he has to say.