Amazon offers the Finish Powerball Tabs Dishwasher Detergent 90-Count Box for $8.40 with free shipping via the steps below. That's tied with our mention from two weeks ago and about $5 under what you'd expect to pay at your local store. To get this deal:
  1. View the Finish Powerball Tabs Dishwasher Detergent 90-Count Box for $12.93
  2. clip the 30% off coupon on the product page to drop it to $9.05
  3. order via Subscribe & Save to yield a final price of $8.40
Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.