RVParkStore.com has 1 RVs for Sale in Clay County, KS. Find the perfect RV, camper, or motorhome in Clay County, KS. The current average listing price is around $115,000. RV prices in Clay County, KS have remained unchanged at approximately 0% compared to the 12-month average price of $115,000. Listing prices currently range from about $115,000 to $115,000 depending on the size, age, and mileage of the vehicle.