I quit my job 4 weeks ago to pursue indie development.
...No offense, but you probably should have done the basic research ("If anyone who's had a game published could post some general units sold/sales info I'd appreciate it") before quitting your job. :-?
Kind of dangerous betting the farm if you don't even know the odds up front...
The bottom line: "can you make enough money to live on?" is a "yes", but unfortunately only a select few manage to do so, the majority if up for a rude awakening.
Can you do it? Possibly -- Do you have what it takes? Unique and great games can do extremely well, but if it's just another clone in a long line of clones the chances are not in your favour.