Drawing Conclusions (Commissario Guido Brunetti Mystery #20) by
Donna Leon is on sale at Amazon for $1.99.
http://www.amazon.com/dp/B004RPY4AQ
I've been picking up books from this series at Kobo where they are couponable. But I never got one as inexpensive as $1.99 (obviously never used the 'magic' 90% coupons).