For the availability, we would suggest you walk into the nearest dealership as they will be the better person to assist you because it depends on their stock book. You can click on the following link to see the details of the nearest dealership and selecting your city accordingly - Dealership.
Yes, but the exchange of a car would depend on certain factors like brand, model, physical condition, kilometres driven, no. of owners and many more. In order to check for exchange offers and value, we recommend you to get in touch with the nearby dealership - Car Showrooms.