Sears offers the Craftsman Heavy Duty Backpack, model no. 26311, for $39.99 with free shipping. That's $5 under our June mention, $15 off list, and the lowest total price we could find. It includes 21 pockets and a main compartment.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.