Due to high demand any and all tours, when booked in advance at least 24 hours prior, are the stated prices. Any tour not booked at least 24 hours in advance will incur a $5 increase in price! This means the $15 tour will become $20 and the $20 tour will become $25. You may book online or call (704) 919-0278 to book in advance. We appreciate your interest in our family business, and feel this will better allow a quality tour experience.