[chessmaster]

But even a solid SNG player wouldnt get his 10% ROI steadily but with quite big swings, i guess there is enough variance in playing $100 SNGs to easily be ahead or behind 6 buyins short term quite often.
And yes you need a quite big Bankroll.
Another possibility would be to deposit each month for a few big MTTs and trying to get the $600 profit this way.
But if this is contributed forget about it, then its never worth it.