Kroger currently has Betty Crocker Muffin Mix on sale for $1.69 (when you buy 10 participating items from the Daytona 500 event).
Coupons.com has a coupon for .50/1 Betty Crocker Muffin Mix. This coupon will double and take off $1.00.
Cellfire.com has a coupon for .50/1 also. This one does not double, but after both coupons you would only pay .19 !
I think the Cinnamon Streusel looks yummy!