I just purchased two boxes of 12 oz Corn Flakes (with FF coupon) from Shoppers in the DC area. I received a manufacturer's coupon at check out for $1.50 off my next purchase of any Kellogg Cereal 12 oz or larger. That ends up being about $1.80 per box of Corn Flakes.

I have a feeling I may be eating more Corn Flakes in the near future.