RVParkStore.com has 1 RVs for Sale in Maricopa County, WA. Find the perfect RV, camper, or motorhome in Maricopa County, WA. The current average listing price is around $63,950. RV prices in Maricopa County, WA have increased approximately 178% compared to the 12-month average price of $23,000. Listing prices currently range from about $63,950 to $63,950 depending on the size, age, and mileage of the vehicle.