This nice $1/3 Duncan Hines Products printable coupon is still available to print. There’s a CRAZY deal you can grab on the Duncan Hines Cake Mixes at Smith’s. They are on sale for $1.00 through 12/24. With the coupon your price will drop to $0.67 each. When you also redeem this NEW $1/3 Duncan Hines Products Mobisave Deposit your final price for three boxes will be $0.34 each!