Target has six-packs of Diet Coke on sale this week for $2.25 each. You must buy four six-packs to get the sale price. Use a 30% off Cartwheel coupon and pay only $1.58 each when you buy four.

Use 30% Off – Diet Coke Packages, Target Cartwheel Coupon (exp 10/15) – (cartwheel.target.com)

Final Price: $1.58 each, when you buy 4