Walmart sets the price of items on the Instacart marketplace. Item prices are generally the same as in-store prices in your area. Most in-store sales, promotions, offers, coupons and discounts will apply. Price as displayed. Price adjustments may be made for item substitutions or changes in weight or quantity. In some instances, in-store prices may differ from those available online as a result of retailer data or recent price changes in-store.