Comixology/Kindle are having a Halloween sale on graphic novels. Once again Amazon seems to have mispriced a couple.
Fables Vol. 5 $0.06:
https://www.amazon.com/dp/B0064W67EG
Preacher Book Five Free:
https://www.amazon.com/dp/B00M0YAAMC
Both are $5.99 sale price on Comixology.
Last time I posted these (Harley Quinn books), the price corrected after a couple hours.