I love Shannon Stacey’s Kowalski novels ( most of them, anyway.) And right now, Exclusively Yours is free at number of e-bookstores. And, if you buy the Kindle Version, the audiobook is discounted to 3.99. ( You have to own the Kindle version, this is an Whispervoice deal. )
Samhain made me happy when they offered A Hint of Frost by Hailey Edwards for free. This book has been on my wislist for ages.
Jaci Burton’s Paradise Awakening is free right now. This is one of her earlier Ellora’s Cave titles. It is short, and steamy. I have this one in paper, but not as e-book.
Not free, but Carina Press is right now offering up to 50 % off on Erotic Romance at their webpage.