A new Consumer Reports investigation indicates that the price you pay for grocery delivery through Instacart may differ from what your neighbor pays for the same items.

According to Consumer Reports and 437 volunteer shoppers, prices on grocery items from major chains could vary by up to 23 percent depending on the customer. These differences could mean some shoppers pay between 7 cents and $2.56 more per item than others.

At issue is the potential for retailers to adopt “surveillance pricing,” which would use personal data to set individualized prices. Instacart, however, told Scripps News, “These tests are not dynamic pricing—prices never change in real time, including in response to supply and demand. The tests are never based on personal or behavioral characteristics—they are comple

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