A couple of big sales going on right now:99 cent Science Fiction and Fantasy Sale! This one includes all the big retailers: Amazon, Barnes & Noble, Kobo, iTunes, Google Play, and Smashwords. Tons of books are priced at 99 cents - science fiction, fantasy, sci fi/fantasy romance, dystopian, humor, and even some multi-novel box sets! (selection varies by store)
Urdaisunia is part of the sale, available at all the retailers, so if you haven't yet read this tale of war, forbidden love, and gods behaving badly in an ancient desert land, now's your chance to get it for only 99 cents.
July 1-31: It's the site-wide Summer/Winter Sale at Smashwords! Use coupon code SSW50 at checkout to get all my books 50% off (except for Cure for Nel and Mistress of the Mirror, which are free!). Lots of other books on sale too, at varying discounts.