word of advice if you payed with paypal, do not wait too long before filing a complaint with them. I have heard too many stories of people getting screwed because the seller keeps feeding them lines of BS, then when they finally have had enough it is too late to get money back from paypal. It is not unlikely this seller intentionally mislabelled these headers as ceramic in attempt to make a few extra bucks. You should contact the seller FIRST and demand immediate resolution, because contacting them first is the right thing to do, but keep in mind he could very well be scum and don't get caught up in his BS.