Whenever I see people claiming they did something for 0$ I find it disingenuous. It reminds me of the old JWZ quote:
> Linux is only free if your time has no value
> Linux is only free if your time has no value
People don't go around saying: "this latte cost me $48 dollars -- $8 dollars for the latte and 1 hour of my time ordering and drinking it at Starbucks".
Not to mention that people also have free time. It's not as if you're making money when you are off of work (except if you have a passive income scheme, in which case you keep making them even while you go around shooting a movie).