Kindle daily deal, on sale for $0.99:
Clean Sweep by Ilona Andrews
There's not much romance in this first book, but I know there are a lot of UF fans reading this thread and Ilona Andrews is one of the best UF authors out there. This entire series is fantastic.
The Andrews serialize each book on their blog, then package it and release it. They just finished the third book, which was the best one yet. It is still up on their website to be read for free, but it will be coming down pretty soon as they are planning to release it for sale before Christmas. If you do decide to read the third book while it's still free, I would highly recommend buying and reading the second book,
Sweep In Peace, before you start on it as I think you'd miss a lot if you tried to read out of order.