This is a non-smoking household.Buy 2 or more books or lot of books get 20% off your total! (Must be purchased together/large book lots excluded)After the 1st listing purchased at regular shipping cost, the shipping will be cents per listing purchase after that. If you buy more than one item simply add them to your cart and once you are done click on the cart and Ebay will do the 20% off and shipping calculations. (Please note books selling together count as one no matter how many are in the set) Items ship one day(via Media Mail) after payment is received. Please note household items are not part of this offer. But I will combine shipping if possible. Please note I do not ship to prisons or detention facilities since they only accept packages from bookstores like Amazon or Barnes & Noble.