+ wishlist Add to Cart The item has been added Author: James B. Maas Megan L. Wherry David J. Axelrod Barbara R. Hogan Jennifer A. Blumin Power Sleep: The Revolutionary Program That Prepares Your Mind for Peak Performance [9780060977603] Buy More - Save More. Below are the available bulk discount rates for each individual item when you purchase a certain amount Quantity Price Savings 25 - 99 41% 100 - 249 44% 250 - 499 47% 500 - 999 49% 1000+ 51% List Price As Low as $18.99 Format: Paperback