Your Data Might Determine How Much You Pay for Eggs

If you’re near Rochester, New York, the price for a carton of Target’s Good & Gather eggs is listed as $1.99 on its website. If you’re in Manhattan’s upscale Tribeca neighborhood, that price changes to $2.29. It’s unclear why the prices differ, but a new notice on Target’s website offers a potential hint: “This price was set by an algorithm using your personal data.”

A recently enacted New York State law requires businesses that algorithmically set prices using customers’ personal data…