My moms best friends husband cuts about 8 lawns for exercise and just to help out, however he did charge. He has been doing this for years, he doesn't have to, he is just a really nice guy, I have known him my whole life. Well, one of his customers passes away and leaves him everything, the house, car, savings account, everything. Apparently, she had no family and really took a liking to him. He didn't say but I'm guessing well over 200,000 clear. You see, it really pays to be a nice guy!!