This morning I went to Hy-Vee to purchase some Post Trail Mix Crunch ($5/2) and used (2) $2/1 coupons. After I paid, the Catalina spit out $1 off my next purchase. In the fine print it said...Buy X Post Trail Mix Crunch Cereals, get $X on your next shopping trip.
Here is the breakdown.
Buy 2, Get $1
Buy 3, Get $2.50
Buy 4, Get $4
Coupons for $/off are available off the Post website.
Wish I would have known before I went to the store...I had 4 coupons available to use.
Hope it helps someone else.