What is the labor fee usually charged for changing tires on a car?

A friend is changing tires on my car for me, he isnt charging me labor, and I just want to know what the fee usually is for that so I can get a gift or something of equal value.|||somewhere around $25|||20-30 bucks. I doubt he does it right because it's impossible to do right without professional equipment. You'll just be paying a tire shop to fix what he does.|||depends on the size of the tires, anywhere from $12.95 a tire to $30.00 a tire|||I've seen between 15.00 and 25.00 dollars In California.|||10$ here plus 2$ each to get rid of your tires.|||is he balancing them and installing new stems? 15 ea if yes|||my neighbor gives me a chocolate cake, i do it for free at the shop