I shared an apartment with a good friend of mine who are making $10-$50k/month.
For obvious reasons he moved into something bigger
The spread is enourmous and sometimes he is down to "only" $10k profit which is not much playing NL1000 (only 10 buyins)
he is playing roughly 70-100k hands / month and have been playing 5 days a week for 3 years straight. It takes pratice and fucking hard work to do it, but if you have 5+ spare hours a day and are willing to use the first 6 months playing NL25 until you have made at least 100 buy ins well then I can only say go for it!!!
If you do not have the right amount of decipline or time for this then stop now or play occasionally for fun