YMMV on the double coupons. Amazon has the 15.8oz Greenies Pill Pockets Dog Treats (Hickory Smoke Flavor) for $15.98 - $6 off (check “Save an extra” box) - 5% off with Subscribe & Save (can cancel at any time) - $3.19 off automatically at checkout = $5.99 with free shipping on $35+ or with Prime. 

• Additionaly YMMV: Chicken is $7.49, Peanut Butter is $8.21 with the double coupons.