Big Y World Class Markets are family owned and operated retail grocery stores. Our Walpole market has the Y Pharmacy, open Monday through Friday from 9am to 7pm and Saturday 9am to 5pm. And Big Y offers a new service in Walpole, BigY2Go. It is an order online service with store pick-up. You order your groceries, we do the shopping and you drive up and we load the groceries into your car! Great service for busy people! At Big Y we try to exceed our customers' evolving expectations with only the best World Class customer service and value.