I have gotten an estimate from a contractor for doing some work on front porch columns, fixing or replacing window screens, replacing porch screening, replacing a handrail. In the breakdown of his estimate there was a $400 charge for "truck." I asked about that and he said it was to cover his costs of getting to and from the job site, going to get the screens. Is that normal? It seems to me that would be just his general costs of doing business. He indicated it was for two weeks of the truck. I am also puzzled about why fixing the columns and screens and railing would take two weeks.