Thumb Score: +20 Walmart.com has Expert Gardener Lawn Fertilizer (Covers up to 5,000 sq ft, 29-0-4) on sale for $5.23. Select free in-store pickup to save on shipping, otherwise shipping is free on orders $35 or more. Thanks digThisXL Walmart.com also has 21-Lb Bag Expert Gardener Phosphorus-Free Winterizer Lawn Fertilizer (Covers up to 7,500 sq ft, 32-0-10) on sale for $6.79.