for pricing and availability. What are the shipping options for organic potting soil? Some of the most reviewed organic potting soil are the Better-Gro 8 Qt. Gardeners 1-cu ft Organic Top Soil. All organic potting soil can be shipped to you at home. Kellogg 20-Quart Organic Potting Soil Mix. Item #291161. Most organic potting soil range from $10 to $700 in price. Window Garden’s Expanding Organic Fiber Soil. Organic Plant Magic potting soil expands up to 7 times when mixed with... 2. Item #49499. Window Garden’s Expanding Fiber Soil … Compare; Find My Store. How much do organic potting soil cost? 21. Our Best Organic Potting Soil Reviews and Comparisons 1. Sphagnum Moss with 204 reviews. Special Orchid Mix with 227 reviews and the Mosser Lee 432 cu. Model #680. in. Organic Plant Magic’s Organic Potting Soil.