Stitches barely below younger brother's eye from toy rake thrown at him (age 4): $15
Remote control thrown across the room and against the wall (age 12): $25
Door to pestering little sister's room torn off its hinges (just last year): I dunno. He hasn't fixed it yet.
Watching maturing 18-year-old pray for his younger brother, learn to temper his anger. take his little sister out with his date and her little sister (and actually have a good time), clean the house-prepare dinner-and do the dishes without being asked, take his not naturally affectionate almost-man arms and wrap them around his mother with a big "I love you" attached: priceless.
in other news: said 18-year-old also just got accepted into BYU. I can't tell you how many days (including just last Saturday) I wondered if it was worth it. I can tell you now. It's worth it.