Microsoft is now accepting trade-ins for Apple iPads at its retail stores. The promotion sees Microsoft giving gift cards worth at least $200 for the iPad 2 and newer, meaning purchasers need only spend $149 to get an entry-level Microsoft Surface RT tablet. How to redeem this offer - Bring in your gently used iPad 2, 3, or 4 and get a minimum of a $200 gift card to the Microsoft store. - Looking to upgrade your tablet? Check out the Surface RT or Surface Pro.The offer is valid until October 27, 2013 at Microsoft Retail Stores in the U.S.