Thank you for the questions. As an FYI, the WBN's do have a text field that you can modify. You can place what you would like in there and it should answer items 1-3.
1. how do you know how much the shipping will be? Are you end of auction emails sent without a shipping amount? (You can include the shipping amount in the WBN, or direct the user back to the auction, to advise of shipping terms. There is no pre-populated field for shipping).
2. What if I don't know the shipping and need their address before I can figure shipping ~ how do I get that? (You can instruct the user to include all details. They are also prompted to release an address when sending a payment)
3. Can I get you to send out just specified auctions ~ or is it all auctions or no auctions?
(Notifications will be sent on all completed auctions).