Each auction is different.  I use USPS for all my shipping. 

If you bid or buy 2 or more books, wait for the end of all your auctions before you send me an invoice request.  I cannot combine shipping once an item(s)  is paid for or add additional items to an order that have already been paid for. 

Two books  bought together, can be sent together, in a large envelope, via media mail. 

More than two books, but not more than 12 paperback books can be sent in the same flat rate box.  You will be able to save a good amount of money if you do this. 

If you have any questions, please use ebay's contact a member messaging service.