You can do a trip to SXM for a very good price. Think airfare is highest cost, but Spirit and other budget airlines fly to SXM (so does Delta maybe non-stop from ATL). You can get hotel rooms/Airbnbs for around ~$100-$150 a night but a car rental might be needed for shopping and exploring island purposes. Is a great island to visit for a week, many beaches and the whole French side vs Dutch side aspect makes it a wonderful destination.