This highly rated e-book's free again. Content appears to be very similar to another by the same author, although the page counts are different.
FREE today (digital list price $2.99):
Pressure Cooker Cookbook: 100 Quick, Easy, and Healthy Pressure Cooker Recipes for Nourishing and Delicious Meals
by Vanessa Olsen
US:
http://www.amazon.com/gp/product/B019YOKZF2
UK:
http://www.amazon.co.uk/gp/product/B019YOKZF2
(Kindle e-book is also free in other countries.)