Amazon has various Duncan Hines mug cakes and cookie mixes for $2.38 when you check out with Subscribe & Save. Shipping is free with Prime or $25+.
- 4-Ct Duncan Hines Mug Cakes Strawberry Shortcake Flavored Mix with Cream Cheese Frosting $2.38
- 4-Ct Duncan Hines Mug Cakes Caramel Flavored Brownie Mix $2.38
- 8.4-Oz Duncan Hines Mega Cookie Double Chocolate Chunk Pan Cookie Mix (includes 6" pan) $2.38
- 6.6-Oz Duncan Hines Mega Cookie Sugar Pan Cookie Mix (includes 6" pan) $2.38