I recently renovated a day camp field. it was about a 1/2 an acre used for various activities. It was 1,100 for the 40 yards of topsoil, 500 for seed and hay, 200 for skid steer rental, and 2,000 for labor cost. Total: 3,800 I profited 1,600. Is this a good profit margin and if not what do I need to do to get a better profit?