Amazon.com has Greenies Dog & Cat Treats on sale when you 'clip' the 40% off coupon on the product page and checkout via Subscribe & Save. Shipping is free with Prime or on orders $25+.
Examples after 40% off coupon w/ Subscribe & Save:
2.1oz Greenies Feline Smartbites Healthy Skin and Fur (Chicken and Salmon) $0.809.75oz Greenies Feline Natural Dental Care Cat Treats (Tuna Flavor) $3.1912oz Greenies Grain Free Natural Dental Dog Treats (Petite, 15-25 lb. dogs) $6.00More Dog TreatsMore Cat Treats Note: You must be logged into your Amazon account in order to clip the coupon. Coupons are typically one use per account. You may cancel your Subscribe & Save subscription any time after your order ships.