Like Jumper said, $15-$20 per hour for a climber EMPLOYEE is fair depending on his level of skill.
For a 'hired gun', going rate for a decent climber is $150 per day around here. EXCEPTIONAL climbers can make $300 on a good day, depending on the risk involved.
For a climber to show up for an hour and blow half his morning, $60 is fair. I won't show up for less than $75.
I get $150 per day but I don't have my own insurance yet. With my own insurance, I should be able to get $200 per day. I also have all my own equipment, ropes, saws, transportation, etc.