RVParkStore.com has 1 RVs for Sale in Clark County, MT. Find the perfect RV, camper, or motorhome in Clark County, MT. The current average listing price is around $139,980. RV prices in Clark County, MT have remained stable, down approximately 1% compared to the 12-month average price of $141,650. Listing prices currently range from about $139,980 to $139,980 depending on the size, age, and mileage of the vehicle.