Starting 09/10 at CVS is a great time to stock up on some cleaning supplies.
Buy one get one 50% giving a $3.00 ECB when you spend $12.00. Windex Original Glass Cleaner retail price is $4.59 making the second $2.29.
Buy 4 Original Windex=$13.77
Get back $3.00 ECB=$7.77
Making final price $1.94 each