The seller gave me negative feedback (my only one in 6 years). He complained that I gave him neutral but said his product was excellent. I pointed out that I sent him over 10 emails requesting a response about the shipping of the product and to confirm that he got my payment, which I made under 10 minutes from the close of the auction. The seller NEVER once replied to me, then gets pissed that I gave him a neutral feedback.
I have also won several auctions below the reserve price and emailed the seller asking if they would sell it for my winning bid even though it didnt meet the reserve. Some have and some have not.