i need about maybe 1500$ or more per month! where is the best place for web-based online games or standalone downloadable/buy games? and tell me whats the best way to make my sales rising!!
This question isn't Unity specific per se, which is what Unity Answers is for :p
But take a read on the following links.. they should give you some more info on making money with casual/indie games...
http://makeitbigingames.com/2006/03/how-much-money-can-indie-games-make-part-i/
http://rampantgames.com/blog/2006/06/20-ways-to-make-money-making-indie.html