ri, Phoenix is not such a cheap place to be in the US. Has great Mexican food so if you are into this type of food then that helps slightly. Booze is expensive so if you are tea total that helps, mind you water ain't that cheap. Depending upon how far you have to travel you may find that also expensive. I would plan on a budget of $300 a week to be minimum, depending upon other considerations such a laundry, utilities etc, I think others may assume that your budget is just for food and entertainment. Maybe we could offer better advice if we had more information on exactly what your budget is meant to cover, I mean things like health care, just a trip to a med centre can set you back mega dollars. Etc, etc.