Amazon has the 8-lbs Amazon Brand Solimo Epsom Salt Magnesium Sulfate USP (non-scented) for $5.96 - 5% off with Subscribe & Save (can cancel anytime) = $5.66 with free shipping on $25+ or with Prime. Good as relaxing soaking aid in the bath, or as a digestive aid for relief of occasional constipation. Excellent Amazon reviews.