Plenty of boxes in the Inland Empire area of Southern California. Including Corn Flakes.
Price is no object; I would be eating the cereal anyway. Cheaper is always better, just not a criteria here.
I wrote to Kellogg's and told them to never terminate the program. In exchange I promised to never eat Post or General Mills cereals again.
Miles = Loyalty.
P.S.
Bay Area = San Francisco
The City = San Francisco