Buyer beware - I am pretty sure that this auction is fraud!
I have been looking through the sellers feedback (eBay user fjohn07) and have noticed that his feedback consists of a sale of one high value item (a mobile phone worth £370) and the rest of his feedback is made up of cheap simcards that he has bought.
I think that the person that bought the mobile phone off him is either another eBay account that fjohn07 owns or is a friend or something who is in on the scam. He has probably done this to make himself try and look trustworthy by having positive feedback for a high value item that he has "sold".
Either way, even if it's not a scam, it seems very dodgy that he won't allow a local pickup and will only do a delivery and won't accept PayPal. I emailed him asking why he won't accept PayPal and he said that "he has had problems with them".