User Activity

Buyer has already paid for item by paypal, but did not include postage cost. Now i need to resend invoice with postage cost so he can pay postage. He has requested my email to arrange postage cost another way, but Ebay will not allow this. How can I ...
Customer bought item i auctioned, but I added buy it now price one day before auction ended. Buyer claims she wants to purchase item at buy it now price, which is lower than ending auction price. Am I obligated to sell item to her at buy it now price...