There is a simple calculation to see if the sale price of bleach at one store is better than what you normally pay for bleach...
Price/ounces/% chlorine. For example, i can get a gallon of 6% bleach at Aldi for $1.21. Price per oz of CL is $1.21/96/.06 or $0.21/oz. When Walmart had 3 oversize jugs (128 oz each) of 8.25% bleach on sale for $8.65 I needed to know if this was a better deal. So, 8.65/(128x3)/.0825 = $0.273/oz. Aldi is still the better deal. A simple calculation you can do on your smart phone in a few seconds to ensure you are buying the cheapest chlorine around!