When payment is made you should see a message at the top of your sold items, saying "paid, send now". I get this every time I sell something. I have also had the message saying "payment pending, do not send" Do you have either of those messages under your "sold items" list? Do not trust emails that say the item is paid, there is a scam like this, where a buyer sends a fake email (supposedly) from Paypal to try to trick you into sending the item. DO NOT SEND unless you get the previous message from ebay which says SEND NOW.