RVParkStore.com has 1 RVs for Sale in Middletwon, MD. Find the perfect RV, camper, or motorhome in Middletwon, MD. The current average listing price is around $9,500. RV prices in Middletwon, MD have remained unchanged at approximately 0% compared to the 12-month average price of $9,500. Listing prices currently range from about $9,500 to $9,500 depending on the size, age, and mileage of the vehicle.