One set is typically priced at $11.99 but there's a promotion going on right now and when you buy one you'll get a second one for 50% off. Check out with Subscribe & Save and you could pay as little as $14.38 for two 4-count packs.
Please note that Subscribe & Save discounts vary by account. For this product you can get either 5% or 15% off. Your first order will get a minimum discount and when you have five or more subscriptions shipped to the same address, you'll get the maximum discount.