impossible question. some need 1000 per month to live.
all depends on needs..family...lifestyle..country etc...
so a single guy in india lives like half king on 1k per month from domains...same guy in canada cant eat proper with it aftr rent etc
If you started 15 years ago, not big problem. Starting today is very hard and requires a lot of research ( work ) .
If you're starting today, be prepared to hustle unless you have a large amount of cash to start with.