Lawmakers are aiming to crack down on so-called “dynamic pricing” in the wake of a jaw-dropping report showing that grocery delivery app Instacart charged shoppers different prices for the same items at the same stores without telling them, The Post has learned.

Members of Congress “were displeased, shocked, engaged and ready to consider legislative and oversight action,” Lindsay Owens, executive director of consumer advocacy group Groundwork Collaborative told The Post on Thursday, after meeting with 15 lawmakers.

The report finding Instacart charged hundreds of customers widely different prices at big chains including Target, Kroger, Safeway, Albertsons and Costco came as Sen. Ruben Gallego (D-Ariz.) introduced legislation to ban such practices.

“Greedy corporations are compiling A

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