Ther eis 2 ways.
On the item sold email you got from ebay is the buyers address you post the item too IF and only IF they pay by bank deposit and when you click on View Order details their address will show there as well.
IF they pay with paypal you will get an email from paypal to advise of payment received and there will be an address on there to post the item too.
When a payment is made by paypal then ONLY post to the address as seen on that email from paypal as often a buyer will change the address there when payment is made.
