[Jay Kahrs]

What you should charge and can charge are sometimes totally unrelated. I have a minimum and I won't leave my house for any less then X amount per day. You need to factor in travel time, gas, tolls and other expenses and still figure out what your services are worth. Check to see what other people in your area are charging. If you have a lot of experience and know what your doing charge more, if it's your first time out you won't get as much.