Keep an eye out at Target for a regional Granite Gold promotion: buy one and get another for free!  Target coupon policy does not restrict using a coupon on an item made free by a promotion. Use two coupons worth $1.00/1, and the price breaks down to $1.50 per item. That’s 70% less than the regular price of $4.99!

Buy 2 Granite Gold Daily Cleaner, 24 oz $4.99, regular price
Buy One Get One Free through 5/11
Use two $1.00/1 – Granite Gold Daily Cleaner, 24 oz – (coupons.com)
Final Price: $1.50 each, when you buy 2