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 $129,980. RV prices in Clark County, MT have decreased approximately 6% compared to the 12-month average price of $138,317. Listing prices currently range from about $129,980 to $129,980 depending on the size, age, and mileage of the vehicle.