I think the math most freelancers use is wrong. They take a salary number, divide by 2,080, and call it their rate. That ignores many key factors, such as self-employment tax (15.3%), state income tax, unpaid hours, health insurance, and expenses.
I ve been working on a collection of product(s)/service(s) and every time I feel like I ve gotten the minimum set of features built / bugs fixed, I find yet another (it s probably actually 5 more) feature(s) / tweak(s) that need to be done. I guess my question is, if you ve launched how did you manage scope creep / when did you know you were ready to launch?