This week Target is offering buy 3, get 1 free Kelloggs cereal
Buy 4 select Kellogg's cereal for $2.66 each $7.98
Use 4 $1/1 manufacturer coupons from coupons.com and kelloggs.com
Use 4 $1/1 Target coupons http://www.afullcup.com/target-coupon-generator/
YMMV on using 4 Target coupons, you maybe only able to use 3.
Get four boxes for FREE or 25¢ each (if you are only able to use 3 Target coupons)
Also, packages of Luvs diapers are $6.99 this week. If you have the $5 Luvs coupon that Luvs was giving out a few weeks ago, diapers are only $1.99