The percentage of scamming buyers has gone from almost none 10 years ago, to about 1 in 4 today on Ebay, at least in the camera world. I had to quit selling, got tired of people saying a sparkling clear Leica lens had "fungus", or that something didn't work, when it did. It happened with 5 of my last 7 sales even when I write "not guaranteed to work". People still would say "I shipped it to my technician, and he says it has fungus" (I live in Arizona, no fungus here), or one guy with a Minolta 500mm mirror lens, "I opened it up and the dooflocky inside had been scratched....somebody has obviously been inside it". I answered, Yeah, you. I said send it back for a full refund. Then he whined that that cost too much, it wasn't worth it, why don't you give me $50 refund...blah. This on a lens that sold for about half the going rate already because I had to say "for parts, not guaranteed to work". Why did he win? Because I said "lens appears to be in excellent cosmetic condition". So he knew he had me, he could open it up, pull out a hidden part, scratch it or replace it with a worn one, and say "see! It's not as described!" After I refunded, I looked at his past purchases, he's an expert at that type of lens, and bought many of them over the months....