BitBooks.co is a Bitcoin-only eBook marketplace allowing authors to list their book at commission and sell directly to the public.
Listings are free. Payments can only be made in Bitcoin via direct pay or using BitPay.
Authors pay commission on sales, which is deducted by BitBooks before paying royalties. At time of writing the commission listed is 10% of sale price.
There are few restrictions on content, but E-books must be original work and be listed by the copyright owner.
Launched in Spring 2013.