Most items on Instacart cost the same as they do in the stores. They tell you whether prices are the same as in-store prices on a store by store basis. In NYC,

Most items on Instacart cost the same as they do in the stores. They tell you whether prices are the same as in-store prices on a store by store basis. In NYC, only Costco items are marked up, while items from everywhere else (Fairway, Whole Foods, PetcoNow, and Breads Bakery) aren't market up.