Kroger has secret shopper profiles on millions of its grocery customers. They may be affecting what consumers pay for goods.

KEEGAN: Kroger would say that all of the data that they're collecting is helping making your shopping experience better for you. But it comes down to a couple of things.

Kroger said it changed the name to eliminate any potential confusion. ... Kroger acquired the technological know-know for the service when it took over North Carolina-based Harris Teeter in 2014.