How we do this is we just break the rental down into two parts the first the cost of the truck the second the service cost to get the rental price.
so a example might be a truck is on hire for Twenty dollars per week out of that say the lease cost is eleven dollars then this goes to pay for the truck and then the nine dollars goes to the service company. The service side will always depend on the working conditions of the truck and hours the more service needed the higher the service cost then the hire rate is graeter. you will find the lease cost will always be around the same. so if the truck is in a high usage tough environment then the service will be hire than if in a low level environment. also always add just a little extra just in case.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.