Why do the service costs change when I make changes in my order or Service Point?

For the service costs we take into account the transportation and the handling that comes with every reservation: preparing, handing out, taking in, checking and cleaning. The handling and transportation take up the same amount of time and money, whether it's going to be a 4 day reservation, or a 4 week reservation. In other words: the higher the rental amount, the lower the service costs that we charge for transportation and handling.