well the worst is that I had to beg for the payment for 10 days, sending every day good mannered emails and she would just replied few words and in the end she even insulted me calling me jerk. I suppose he received the chips (which were extremely carefully wrapped) and the she put neutral feedback...I still don't understand, but it seems that she had same problems with other people and they were less lucky and she put negative feedback when it was she who wasn't paying. I felt relieved when ebay froze her account!
(i'm still buying manically on ebay, and soon i'll try to sell a couple of books)