Amazon offers Bob Mayer's Valentines Day (Time Patrol Book 8) Kindle eBook for free. That's $5 off list and the best deal we could find.

While the title might suggest that it'll make a good last-minute V-Day gift for your sweetheart, note that this book is about agents going back in time to February 14 in six different years to prevent our timeline from being destroyed. Certainly not a deal breaker for a gift, but less romantic than the title implies. Although the image of dripping blood on the book cover should probably give that away.