You purchase better equipment to save you time, so that you can turn out work quicker and easier. When you started out with a 21' mower and started picking up work mowing for 25-50 bucks a yard. When you went out and purchased that 37"-52" walkbehind or that ZTR did you drop your price to half of what you were getting since you could do it in half the time? I think not!!! I charge by the job on my quality of work, not my quantity work. So, I charge the same regardless of what equipment I use. If I can do it in half the time with the equipment than I could by hand raking, then good for me, because I have to pay for that equipment and the maintenence on that equipment.