Walgreens: M&Ms Money Maker!! MMMMMMMM!!!

M&Ms 9.9oz – 12.6oz – $2.50 ea (buy 4)
Use 4 of the $1.50/1 Mars Product Bagged coupon  (no longer available, hope you had printed it)
Pay $4
Get back a $5 coupon good on your next in-store Mars candy purchase
= $1 Money Maker