Natick, Mass. — Online home goods retailer Wayfair Inc. has announced plans to open its first full-service store at the Natick Mall in Natick. At the Wayfair store, service and home-design experts will be available to consult shoppers on home décor, furniture and other products. Customers can purchase an assortment of home décor products, as well as place orders for home deliveries. The location, which is slated to open this fall, will be 3,700 square feet. The Boston-based company generates roughly $7 billion in annual revenue from online purchases.