It depends on how much volume are you willing to put. If you can play 2000 hands per day for 5 days a week. You can play 10NL and make 100 USD if your win rate is 10BB/100 hands.
I'd like to point out, that, for example:
- you are making 10b/100 on average over one week, meaning 10000 hands, meaning 1000bb in profit over one week,
- you usually play with typical 20bi downswing, meaning all those profits can be erased in one large downswing, what's more you can end up in negative,
- an example would be losing 10 times all ins with pocket aces over the course of next week (which means over 10000 hands, which is not that unlikely), meaning that you played almost two weeks for free after ten bad beats,
- to keep up to average you would need to earn 3xtimes in the following week, if not, those losess chase you to the next one.
And so on, and so on.
Of course 10bb/100 means on average, my point is that huge profit accumulated over some time can be reset in one big bad beat.