Because no one gives information about the price in the reviews: to rent a quad, prices start at 50€/ day and equals the speed in km/h. So if you look forward to rent a quad with 350ccm which is about 70 km/h maximum speed, you'll have to pay 70€, helmets are included. Buggy's start at 100-120€. Overall we've had a great experience, it was quite fun and we would recommend to try it out. Also it was easy to rent and our quad was ready, right after we've paid.