Thanks Tippy.

My sister did all that was suggested, rang ebay etc

They have put a note next to the sale and said that as it is a pick up item, she does not have to post the items.

They also said if he gives her negative feedback based on the fact she did not post, they will remove that feedback.

I guess this means he can give other negative feedback but quite frankly, my sister doesn't care. She isn't going to be buying/selling much on that account anyway. And as she said, if he negs her for not posting, or even if ebay did refund the man, well, we still have the CDs.