Bulk options like Amazon Basics or generic 50lb bags can bring costs down significantly, though shipping weight should be considered if not using Prime.
For the best value, the cheapest places to buy Epsom salt (magnesium sulfate) are like Walmart and agricultural supply stores for industrial-sized needs. While specialized bath boutiques charge a premium, you can find prices as low as $0.05 – $0.08 per ounce by purchasing in bulk or using store brands. Top Retailers for Cheap Epsom Salt
: While a brand name, large 3lb bags often retail for around $5.87.
Costco has been known to carry 12lb bags for roughly $8, providing a highly competitive price per pound.