I have been buying ebooks through both olympia and adultbookshop.com. However, we missed one out BDSMbooks.com.

Though you do pay through the nose you do get quality BDSM stories, what I hope is that these other sites encourage future authors. We need more and when the stories dry up from the ebooks site then we need our new authors, with new ideas and twists in this area.
All these book sites are starting to slow down, and some only have a new book once a month. How about more sites like this with free (or relatively free - being a member) with the vast choice of stories, catering for all tastes!!!