It was just an example - i dont know for sure.
Im sure we all have expensive insurance public liability, vehicle etc, vehicle servicing and motoring related costs, equipment replacement or new equipment, advertising (flyers, newspaper, yell etc) fuel, vehicle replacement (over time), training, uniforms, accountant fees, tax, IT (computer, printers, hand held palms), stationary.. yada yada...
then you may want to think about taking staff on, and have to budget for them too.