Fair enough. I'd say 80K for a 50 hour week (since freelancers are expected to buy their own health insurance, do not get any paid time off, so 80K is a very modest wage for a developer in those circumstances)

I realize a college student/single guy does not need all that much, but for a 29+, with a family, I think that's the minimum (again, with all the self-employment taxes, insurance etc).