"Like" Reddi-wip on Facebook and get a coupon for $1.00 off any Reddi-wip product. Then, take the coupon to Walmart and get whipped topping for only $0.98! But hurry–the coupon is limited to the first 100,000 requests.

Reddi-wip Whipped Topping, 6.5 oz $1.98, regular price
Use $1.00/1 – Reddi-wip Product, any – (facebook.com)
Final Price: $0.98