Here is my take on the fenders. Why were they primered? You dont know what is hiding under there, may be dents repaired, maybe some rust, maybe full of filler. You just dont know. Having the stickers is great. Offer 800 as long as there is not rust. Yes I have seen many NOS panels eaten up with rust. I drove with a friend for a set of Never painted, no rust, no bondo, original fenders for a 70 Challenger. Got them home and they were all of the above. Both hit, bondo, and repainted twice... We saw the repaint but he said they were otherwise perfect...