how does one account for the differences in pricing of some larger companies. i have seen the same company charge 45.00 for a 5000 s.f. lawn and then charge 30 for another 5,000 s.f. lawn. also if using the same formula for pricing large lawns (base + per thousand) it seems profitability goes way down. is there an adjustment? and if so what about commercial properties, is there a different base + price per thousand and how much should the base cover in s.f. ?