Lol, not necessarily, but I'm sure you know that in other forms of SNGs (say 18-man/45/man, etc) there are grinders making a decent amount of money playing the $15 (given higher ROIs). And take into account that not everybody live in cities where the McDonalds Index is astronomically high

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But yeah, I take from your comment that nobody grinds these for a living at stakes lower than $100+.
Anyway, I guess that the real point of my post was to get a benchmark on what are the numbers successful grinders are working with with respect to the profitability drivers I mentioned on my OP (games/month, hours/day, rois, etc, etc).