A second book is $4 so thats $9 for two.
I haven't bought an Entertainment coupon for a while and I'm not sure how good the coupons are. But if you do buy these then this is a pretty cheap price for them.
Ebates also gives 17.5% cash back on Entertainment.com but I"m not seeing the $5 deal if I go to Entertainment through Ebtes so it may not work that way.. If you can figure out a way to find the $5 deal via Ebates then its worth a little extra cash back.
Standard Ebates blurb:To get the cash back you need to be signed up with Ebates. Then simply go to Ebates to get the referral to the the store before you do your shopping. I also get a referral bonus if you use my links to sign up with Ebates.
--This article may contain referral links which pay this site a commission for purchases made at the sites.