Amazon has 8.45-Oz Finish Dual Action Dishwasher Cleaner (RAC95315EA) on sale for $2.75 when you clip the $1.89 coupon on the product page and check out via Subscribe & Save. Shipping is free w/ Prime or on $35+ orders.

Note: You must be logged into your account. Coupons are typically one use per account. You may cancel your Subscribe & Save subscription any time after your order ships.