brihvac

That's normal for any internet transaction. You can not expect him to eat the shipping because you're not satisfied. Other than his childish comments, I don't see what else could have been done. You were given the option to ship them back and chose not too. You can see in the pictures that they are not "new" so you need to share some blame.

F150ATX

He only has 6 posts. Not an active member. That would have been my first warning. It sucks but not much you can do.