When we got married (almost 7 years ago), we bought a pair of hair clippers so I could start cutting Adam's hair. My friend who is a hair dresser showed me how to do it once and I've been doing it ever since.
Since then we've had 3 children and I have learned to cut their hair as well. (yes, I have cut Caleb's. Crazy kid has more hair now then the other two did at 1 years old!)
Men's hair cuts aren't that hard to do and they probably average about $12 per hair cut (plus tip) so that's a lot of money I've saved over the past 6 1/2 years by cutting Adam's hair!