Martin’s Super Markets in St. Joseph and Stevensville are now offering same-day delivery of groceries. Martin’s has teamed up with Instacart, a North American leader in online groceries, for the program. To use it, you have to go to Delivery.MartinsSuperMarkets.com, or open the Instacart app on your mobile device. The delivery fee is $3.99 for orders of $35 or more. Those who sign up for an extra level of service can get the deliveries for free. Martin’s announced the new program in southwest Michigan and at some of its Indiana stores this week. Roger’s Foodland in St. Joseph also offers home delivery, as does Meijer.