This 81ct Tide Pods Original Scent Laundry Detergent drops from $18.99 to $18.04 to $13.04 at Amazon when you "clip" the $5 off coupon on the product page and check out with subscribe and save. Plus this option bags you free shipping. This is the lowest price we could find for this quantity by $6 and works out to $0.16 per pod. Note that subscribe and save enrolls you in monthly deliveries of this item, but you can cancel at anytime by logging into your account. Sales tax is charged in most states.