This approach works for me: To the customer I say: "For your turf in this area we will make about 30 visits to mow; another 4-5 visits picking up leaves this fall; then we come by on/about December 15th to 'spiff you up' (mow, trim & edge) for Christmas. The per visit costs for the mowing and leave pick ups would total $2400 for the year. At $200 per month, you pay one price at the first of each month all year long and you don't have to worry about your property. I take care of it. Simplifies the process for both of us. You don't have to record my visits on your calendar to see if I billed your right. You just look out and see that your property is continually being well maintained." Works well for me. I use 10 months rather than 12 as I do not make any visits to the property in January and February. I also roll the pesticide, aerating into this computation where it works. Just started this practice in 2001 and every new customer that I presented it to liked it!