Bottle of shampoo $4
Coupon Doubled -$1.50
total cost: $1
This is a great time to stock up shampoo, conditioner, and other toiletries. Those coupons tend to be $1 or more and supermarkets don't usually double coupons unless they are $0.99 or less.
You can get coupons from the Sunday newspaper or you can use the coupon websites that can be found on this post. Harris Teeter has these sales every few months so this opportunity will come about again. My favorite times to shop at Harris Teeter is when they do these Super Double Coupon days and their Triple Coupon days.