You have to have a floor to cover dropping the gate at each client. I work off hourly cost with a minimum cost for showing up. On large properties I go on a straight hourly cost. I break down cost by overhead - shop, advertisement, administration I then look at labor cost including burden by the hour. I then look at equipment cost by the hour over the expected life, include fuel, maintenance, insurance and such. Consider utilization to I know I can work 9 months but have to cover 12 months of expenses. Consider finance cost, inflation and capitalization on your investments. I then add profit. Then consider the market. Do not be afraid to be a little more expensive than what you think the market will bear cause you can not compete with low ballers.