For Prime members only, Amazon offers the Finish Powerball Tabs Dishwasher Detergent 90-Count Box for $8.72 with free shipping via the steps below. That's buck below our December mention and about $2 under what you could expect to pay in local stores. To get this deal:

1. View the Finish Powerball Tabs Dishwasher Detergent 90-Count Box for $13.81
2. clip the 35% off coupon on the product page
3. order via Subscribe & Save to yield a final price of $8.72

Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.