There is a fabulous deal at CVS but it will take a store with a large stock (and a lot of coupons) so you may want to talk to your CVS manager about getting extra in!
Buy (20) Xtra Detergent $1.49
Buy (1) Dawn Dish Soap
Use 10 $1/2 Xtra SS 5/10
Get $10 Cash Card Back
Final Cost: $10.79 or .49 for each Xtra
*The cash card tracks so you may need to visit multiple CVS stores to find 20 detergents.