I'd bet there's no charge. Looks like the charge is for the campsite with hookups. And the cookouts and t-shirt. C'mon over.
'03 Freightliner FL112, 295" wheel base, with '03 United Specialties 26' living quarters, single screw, Cat C12 430 h/p 1650 torque, Eaton 10speed , 3.42 rear axle ratio