Last week my partner used my ebay for the 1st time ever and found 2 dvd collections he liked with free P&P to the uk and as they were in the last seconds he bid quickly without reading the description 
He paid straight away and was very chuffed to get a good deal until 20 mns later when we received a message saying "you have won 2 of my items but forgot to wait for the invoice so i could add the postage can you send £6 (£3 each item) to this email ..... via paypal"
I asked about it on the community board and got a few replys saying not to pay it as it is against the rules so i didnt and sent a message saying that it is against the rules to ask for postage on items listed as free to which he replied saying that he would not be sending them until it is paid.
I tried to open a dispute but it said it was too early so i sent an email to ebay to ask about the rules and what should i do only i havent't had a reply yet.
He has now refunded my money (last night) and has relisted them again with free postage but asking for it in the description and he sent me a rude message basically calling me a liar and said that it is not a rule only a guideline and im the only one that has had a problem with him and therefore i am a scammer and just out to steal off people 