For in-store pickup only, Home Depot offers the Scotts Earthgro Mulch 2-Cubic-Foot Bag in Black, Brown, or Red for $2. That's 50 cents under our May mention and the lowest price we could find by $3. It features Weed Barrier technology, which is purported to block weeds for up to six months.

Note that you can buy 25 bags and apply coupon code "RWBEVENTHD" to drop it to $45, or $1.80 per bag.