Target sells several 6-count Pure Protein High Protein Bars for $6.29 each (prices may vary)

Chocolate Peanut Butter
Chewy Chocolate Chip
S'mores
Chocolate Deluxe
Peanut Butter Carmel Surprise

Print $2.00 off Target Coupon here:
http://coupons.target.com/healthcare-coupons

Sign up for Pure Protein's Newsletter and they will email you a link to a printable $1.00 off coupon (this is a unique bar code). Find the sign up page here:
http://www.pureprotein.net/pages/newslettersignup.aspx

Target allows you to stack a store coupon and manufacturer's coupon. Final price $6.29-$2-$1=$3.29 or about $0.55 a bar.