Stop & Shop has Duncan Hines products on sale, down from the regular $1.99 price to $1.50 through August 8th. Use a printable coupon to pay only $0.80 if your store doubles!

Duncan Hines Brownie Mix $1.50, sale price through 8/8
Duncan Hines Frosting $1.50, sale price through 8/8

Use $0.35/1 – Duncan Hines Products – (coupons.smartsource.com)
Final Price: $1.15, or $0.80 with double