I want to highlight that this is with; health insurance, computer- & software costs, rent etc divided by a year and incorporated into the price. It's not a random number :) Do your own calculations on your expenses and savings, you could probably get away with less if you don't have family etc. That's where I would try to…
I was going to type out a response but EarthQuake pretty much covered what I was going to say in that thread Alemja linked. Though one thing not mentioned there is incorporating. To save yourself from the large amount of taxes you'd be paying the government as a self-employed individual you may want to consider working…