I've been doing lawn care & light landscapiing last 3 years. Now ready to get into snow removal. but do not know how to set prices. By depth of snow? Square footage of area? Do you always get started early, even if it is still snowing? Do you often go back to the same job later, after plowing it earlier? If you hit the same area more than once, do you charge more, and thus do customers co mplain about the charges? Thanks for any info.