When I was at the grocery store this morning, there was a great big end-cap display of all Kellogg’s cereals, with a sign that there was currently a special — buy 4 boxes for $8 (regular 2.50 each).
I just laughed and walked on by.
Most cereals just like bread are made by just a few companies. Even if it’s a store brand it is made by those big companies. Just less cost because there is no advertising. Same goes for canned/jar/dairy goods.
No real way to find out who makes the store brand. I buy many store brands. When you live on a fixed income that is 1 way you reduce cost.