Core Viewpoint - A study criticizes Instacart (CART) for testing different prices on the same products across various retailers, including Target (TGT), Safeway/Albertsons (ACI), Kroger (KR), Costco (COST), and Sprouts (SFM) [1] Group 1 - Instacart's pricing strategy shows price discrepancies for identical items among competing retailers [1] - Instacart claims that limited and random testing helps retailers maintain the affordability of essential goods [1]