I'm in the same boat as you rppaving.
Looking to get going this spring as well and the pricing for mowing lawns is confusing to me as well. With the snow plowing I've done, it's X dollars an hour with the skid steer and snow pusher and that's it. Mowing I'm not so sure of though because there are some that have their hourly rate and some that go by the job and size of lawn. To me the hourly rate is the way to do things but I'm unsure of how to calculate what it would cost me per hour to mow, trim, blow sidewalks off, put fuel in the truck and mower, maintain everything, pay myself etc etc etc and still stay in the black.