After you have finished shopping, goto your "Purchase History".
To find this option...At the top of the eBay page goto "My eBay", using the drop down menu choose, "Purchase History".
Here, you will find all items that you have "committed to buying".
Goto the first item that you have committed to buying. At your right, under "Actions" It says, Request Total From Seller.
Chose this Link...If, you have purchased from multiple sellers you'll have the option to chose "only this seller".
At the bottom of the page confirm your request.
I will receive a message that you have requested a total.
I will combine shipping charges.
I will Send You a Final Invoice.