A nice sale from Orbit books. I'm linking only to their sale page, as it already includes links to the sellers (i.e., Amazon, B&N, iTunes) etc.
Four books at $3.99 Each (US only)
BLOOD RIGHTS by Kristen Painter
FEED by Mira Grant
GERMLINE by T.C. McCarthy
TEMPEST RISING by Nicole Peeler
I've read FEED and it was terrific. I picked up GERMLINE from this sale, as I've wanted to read it for a while.