Amazon.com has select Pepsi, Frito Lay and Quaker Products on sale with up to 30% Off listed below when you 'clip' the corresponding coupon on the product page and check out via Subscribe & Save. Shipping is free. Thanks TattyBear
Note, must be logged in to clip coupons; coupons are typically limited to one per account. You may cancel Subscribe & Save anytime after your order ships. Select the later date from the "First Delivery On" menu to get traditional S&S checkout instead of adding to your cart.
Example deals (prices after clipping coupon on product page and 5% subscribe & save discount):