Amazon currently has this item priced at $16.49 ($4.12 per bag).
Check out using the Subscribe and Save option to save 5-15%. With a 15% discount, the final price is $14.02, or $3.51 per bag, shipped to your door.
(I love the convenience of shopping online and I think you will too. The links in this post are my referral links. Read my disclosure policy here.)