Economics also teaches us that if you're getting more calls than you want, your price is too low. I'm not trying to be mean, but I wouldn't want an 11pm phone call to track a 60lb yearling that a some kid gut shot. If I'm going to take that job, I'm getting paid for my time. I would want my price to be high enough that the hunter asks himself if it's really worth it before he calls me. Set your price too low and you'll be getting lots of calls that you may not want at all hours of the night.