I generally bill all projects on a time and materials basis at $60 per hour. I am happy to provide a verbal or written estimate before the project begins and will consider fixed price estimates for certain projects as they are required.
My rates reflect that this is not my primary source of income. I have a full time job in addition to my computer consulting work, which means that I am unavailable during normal business hours, Monday to Friday. This works well for many homes and businesses where it is desirable to have technology work done outside of normal business hours, but I want to be clear that I have an obligation to my full time position ahead of my consulting work. My rates reflect this dynamic.
The benefit is that clients get professional-quality expertise at an affordable rate, with the understanding that work typically occurs on evenings or weekends.