Thumb Score: +5 Amazon [amazon.com] has 3-Count 20-Gallon Ziploc Jumbo Big Bags for $4.87 when you 'clip' the $1.30 off coupon on the product page. Shipping is free w/ Prime or on orders of $25 or more. Note: Subscribe & Save is available but not the typical discount. You may cancel Subscribe & Save anytime after your order ships.