It’s 5:30 p.m. on a Tuesday. You grab a rotisserie chicken and a carton of eggs. The price tag on the shelf isn’t a piece of paper anymore; it’s a small digital screen. You probably check the price, toss the item in your cart and keep moving. But here’s the question you should be asking: Did you pay the same price as the person who bought these items at 10:00 a.m.? Or are you paying a premium…
Read the full article here