RVParkStore.com has 1 RVs for Sale in Lake County, WI. Find the perfect RV, camper, or motorhome in Lake County, WI. The current average listing price is around $21,500. RV prices in Lake County, WI have remained unchanged at approximately 0% compared to the 12-month average price of $21,500. Listing prices currently range from about $21,500 to $21,500 depending on the size, age, and mileage of the vehicle.