If you are looking for the very barest of basic services, the average cost of lawn care services in Small Town, USA should run somewhere in the neighborhood of $30 per week, which puts you anywhere from between $120-150 per month.ne thing that can be said about this particular type of service is that while many service oriented jobs and such have quadrupled in expense over the last decade or so, the average costs of lawn care services are only about double what they were in the 1970’s in most areas of the country.