Actually, Casey M is not entirely correct about Trader Joe's. They do not buy name brand foods and repackage it as their own. That would be illegal. What they do have is their own buyers who find products directly from the manufacturers at a much reduced cost (because no middleman is involved). As a rule, TJ's keeps the info about their business relationships hush hush. And Joe Oh's don't taste exactly like Cheerios. General Mills would have a big problem with TJ's re-branding their proprietary formula.
Also, for some reason people think everything they sell is healthy and/or organic. That's not true either. What they do sell are products that tend to be on the healthier side of the scale, such as no high fructose corn syrup, artificial colors etc. However, some of their delicious things are very high in sodium. I used to work there and could go on all day about the place. I still love it. Many wonderful friends still work there so I shop there and visit with my old buds.