Well, one thing you have to keep in mind is that you actually have to get to the client's driveway first. If your client is 20 miles away, is it worth driving 20 miles in snow, dangerous conditions to shovel a foot of snow for 20.00? It may be worth it if you have 10 other stops along the way but for just one stop...then no! You have to factor in proximity or what area you will cover. Basically each location may need it's own price depending on the geographical area. If Mr. Yates lives 10 miles out in the boonies and state snow plow vehicles don't plow there until much later, then you will have to establish a time frame and extra cost for plowing that individual's driveway. Lots of things to factor in.