Books are usually sold by School and Park district fundraisers for $20 but by end of year you can find it cheaper elsewhere. Plus, there is $10/per night up to 10 night stay priceline bidding hotel bonus and few other coupons as well..

Ebates.com offer 30% off entertainment which i guess will bring the price of book from $15 to $12

Offer valid for 2 (two) 2010 Entertainment books at a price of $20 with free standard shipping, see site for details.

If you shop at Dominick's a lot you get your money back by 2 - $5 off $50 coupons - one in 3 months
If you use priceline to bid on hotels - there is $10.night bidding bonus
if you plan to travel on American Airlines off peak - 20 OFF and 10 OFF coupons
15% Menards on REGULAR priced merchandise...

Terms & Conditions of Entertainment® Book Membership Offer

The 2010 Entertainment® book is a part of your 2010 Entertainment® Membership.
Offer expires 6/15/2010. Valid while supplies last.
Offer valid for 2 (two) 2010 Entertainment books at a price of $20 with free standard shipping, see site for details.
Offer only available through this email.
Offer cannot be combined with any other offer, coupon, points, rewards programs or gift card programs.
Offer not valid on prior purchases.
All prices and discounts referenced are in U.S. dollars.
Entertainment Publications, LLC retains the right to modify this program at any time without prior notice.
Merchants and savings are accurate at time of email deployment.