Daedalus Books is an online bookstore that offers the residual, unsold new books, but you might want to give them a second chance. Their prices are really cheap, and you can get a discount of 10% if you sign up for their email list.
They are shipping worldwide, and the cost depends on the weight of the shipment. It might take 3-6 weeks for the shipment to arrive.
Booktopia is an online bookstore based in Australia, that offers:
Free shipping isn't available to everyone. Booktopia sends you an email when that option is available. During that time, you can pass the code to a third party (friend, family member, colleague, etc.). This is done because their shipping price is fixed, no matter how many things you order in one go. It's always $6.95.
This store offers their services only in Australia (including the rural areas) and New Zealand.
Paperback Swap is an online bookstore that is a little different because it lets you swap books with other users on the site. If you have a book to offer, you list it on your profile. For each book you send, you get one credit. You can use that credit to request a book from someone else, or to get a discount for the books this store offers.
For registering on this site, you get two credits, which means two books free of charge.
Harlequin is a Canada-based online bookstore that has offices in Toronto, New York, London, Tokyo, Milan, Sydney, Paris, Madrid, Stockholm, Amsterdam, Hamburg, Budapest, Granges-Paccot, Rio de Janeiro, Mumbai, and Istanbul. Their literature is romance-inclined and for women.
It offers discounts on shipping:
They offer it to the first time buyers
Returning customers - for $15, you get free shipping; if the order is above %15, it is automaticaly free.
There are many subgenres of romance that Harlequin offers, such as, African American, classic, contemporary, erotic, fantasy, historical, home&family, inspirational, passion, relationship, romance with more.